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Namma Kalvi - The No.1 Educational Website for 9th, 10th, Marks ; So Time: 45 minutes11th, 12th, TRB PHYSICS TET & TNPSC Materials
Electrostatics (Unit -1) 1. 2.
Choose the correct answer : The electrostatic force between two point charges kept at a distance d apart. In a medium e = 6 is 0.3N. The force between them at the same separation in vacuum is a)20N b)0.5N c)1.8N d) 2 N Electric potential energy (u) of two point charges q and q at a separation r is r
1
qiq
2
qiq 1M2
q.q2 b) 47i£ r
2
q ^ d) 4ns r
0
3.
0
Electric field intensity at a distance r from an infinitely long uniform charged straight wire is directly proportional to a) r b)r c) r d) r b) C N mc) C N nr d) no unit a) C N' mThe unit of relative permittivity is A dipole is placed in a uniform electric field with its axis parallel to the field. It experiences a) only a net force b) only a torque c) both a net force and torque d) neither a net force nor a torque The number of electric lines of force originating from a charge of q Coulomb is a) 1.129 q x 1 0 b)1.6qx10 c)6.25qx10 d)8.85qx10 The electric field outside the plates of two oppositely charged plane sheets of charge density a is 1
4. 5. 6.
11
7.
10
2
2
2
18
12
0
r
b)—
c)
d) —
If a point lies at a distance x from the midpoint of the dipole, the electric potential at this point is
1 proportional to 12.
2
-a
a)2$ 11.
2
2
2
d) zero b) a) 2s '> 2e Two capacitors are connected in series. Their effective capacitance is 1.5 ^F. The value of one capacitor is 4 uF. What is the value of another capacitor? a)2.4nF b) 0.24 nF c) 0.417 uF d)4.17^F When an electric dipole of dipolemoment p is aligned parallel to the electric field E, the potential energy of the electric dipole is a) pE b) -pE c) zero d) infinite - : : : - = ce ce -ses art e BCtric Ru> $ to through a spherical Gaussian surface of 10cm radius centred on the charge. It the radius of the Gaussian surface is doubled, the flux is 0
9.
1
19
+a
8.
2
2
1
a)
1
1
c)
b)
d)
The work done in moving 500 \iC charge between two points separated by a distance 2m on equipotential surface is a) 1000 J b) 10 J c) 250 J d) zero Which of the following quantities is scalar? a) dipole moment b) Electric force c) Electric field d) Electric potential If a dipole is placed in a non - uniform electric field at an angle 0, it experiences a) a force only b) a torque only c) both a force and a torque d) neither force nor a torque Three small identical balls have charges -3q, +8q and +4q. They are brought in contact and then separated. Now the charge on each ball is a) 5q b) 3q c) 15q d) 9q The capacitors are used a) to generate electric current b) to reduce electric current in power supplies c) to transmit power d) to reduce voltage fluctuation in power supplies The intensity of the electric field that produces a force of 10' N on a charge of 5 jiC is a)5x10- NCb)50NCc)2NC d) 0.5 N C The negative gradient of potential is a) electric field intensity b) electric force c) electric current d) torgue Three capacitors of capacitance each C are connected in series. The effective capacitance is C 3 a)y b)c)3C d) 0.3C 3
13. 14. 15. 16. 17.
5
11
18. 19.
20. 21.
1
1
24.
b) 3671 x 10" C N nr
io-
9
• C N' nv d) c) 36/rx C N- nr 36TT The concept of electric lines of force was introduced by d) Michael Faraday a) Coulomb b) Benjamin Franklin c) Gauses N m C is the unit of a) electric field intensity b) electric potentiai c) electric flux d) electric dipole moment An electric dipole of moment 1.414x10 Cm is placed in a electric field of strength of 0.5NC at an angle 45°.The torque on it is a) 0.5Nm b) 0.707 x 19" Nm c) 0.5x1 O^Nm d) 7.07 Nm If a point lies at a distance r from the midpoint of a dipole, the electric field at this point is proportional 1 l J _ • to a) — b) — c) y d) 9
23.
1
The direction of electric field due to a dipole at the equitoriai line is directed the direction of dipole moment, a) along b) opposite to c) perpendicular to d) perpendicular and opposite to The value of e„ is a) 3671 x 10 C N" nr
22.
1
2
2
1
2
9
2
1
2
2
2
2
1
2
1
6
1
6
25.
1
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Four charges +q, -q and -q respectively are placed at the corners A, B, C and D of a square of side a. The electric potential at the centre of the square is
>
4^7
>4^a~ 4^a" d zero The electric flux over the hollow cube of side 10cm. If a charge of 8.85 n C is placed at the centre is aJIxKFNm'Cb) 0.885x10" Nm C; c) 88.5x10 Nm C" d) 1.67x10 Nm C" The capacitance of a parallel plate capacitor is C. What will be the capacitance, if the distance between the plates be reduced to half and the space between them is filled with a substance of C dielectric constant 2 ? a) C b) 2C c) — d)4C n capacitors of each capacitance C are connected in series and then parallel. The ratio of the effective capacitances in series to parallel is 1 1 a) b) I c) n d) n n n The electric field intensity is 400Vnv at a distance of 2m from a point charge. It wiil be 100Vm at a distance. a) 50cm b)4cm c)4m * d)1.5m The electric field on the surface of a charged sphere (q) of radius R is q q q a
b
)
c )
1
6
2
1
2
s
-
1
6
2
2
1
1
4 ^ R >4^R * The potential energy stored in a capacitor is a
)
1
b
r
d ) Z e r
°
1 q 1„ 2 1 2 C 2 2 2 ^ The potential difference two oppositely charged plates of charge density a, separated by a distance d 1
2
a
)
b
)
o
C
q
C
)
q
C
d
C
)
d a2 od b) — c) — 7 d) T " o ed E The electric field due to an infinite charged plane sheet at a distance r from the sheet is a) directly proportional to r b) inversely proportional to r c) inversely proportional to the square of r d) independent of r C V' is the unit of a) electric flux b) electric energy c) capacitance d) electric dipole moment Potential energy of two equal negative point charges of magnitude 2\xC placed 1 m apart in air is a) 2J b) 0.36J c) 4J •' " d) 0.036 J £
. ' 77 M a)
0
0
1
Torque on a dipole in a uniform electric field is maximum when angle between p and g is a)0° b)90° c)45° d) 180° A hollow metallic spherical shell carrying an electric charge produces no electric field at points a) on the surface of the sphere b) inside the sphere c) double the distance of its radius d) outside the sphere The work done in moving 4^C charge from one point to another in an electric field is 0.0'i2J. The potential differences between them is a) 3000V b) 6000V c) 30V d) 4 8 x 1 0 ^ The electric field inside the two oppositely charged plane sheets each of charge density o is a j^o_ a 2V >2^ $ \>' Which of the following is not dielectric? a) Ebonite b) Mica c) Oil d) Gold In the given circuit, the effective capacitance between A and B will be 36 . r* | I !H5 I . a) 3 F b) - uF o & ^ £ ~ l V - ^ c)13^F d)7uF j / A capacitor of capacitance 6^F is connected to a 100V battery. The energy stored in the capacitor is a)30J b)3J c) 0.03 J d) 0.06 J An electric dipole of moment p is placed in a uniform electric field of intensity p at an angle with respect to the field. The direction of the torque is a) along the direction of p b) opposite to the direction of p
@)
0
b
zero
3
F
M
c) along the direction of E d) perpendicular to the plane containing p and E The ratio of electric potential at points 10cm and 20cm from the centre of an electric dipole along its axial line is a) 1:2 b)2:1 c) 1 :4 d)4:1 The unit of the number of electric lines of force passing through a given area is a) no unit b)Nm Cc) N C d) N m The principle used in lightning conductors is a) corona discharge b) mutual induction c) self induction d) electro magnetic induction The capacitance of a parallel plate capacitor increases from 5 p.F to 60 uF when a dielectric is filled between the plates. The dielectric constant of the dielectric is a) 65 b) 55 c) 12 d) 10 When a glass rod is rubbed with silk it lost 6.25x10 electrons. The charge acquired by the glass rod is a) +6.25x10- C b)+10" C c)+10 C d)+1.6x10 C The electric field between two oppositely charged plate is 5x10 N C . The surface charge density of the plate is a) 1 C m bJIO^Cnr c) 8.85 x 10- Cnr d) 8.85 x lO^Cnr 2
1
1
13
13
6
5
5
2
2
13
1
18
2
2
ONE MARK SPECIAL TEST
Test No.2
STANDARD - XII Time : 45 minutes PHYSICS Marks : 50 [Current electricity, Effects of current electricity] Choose the correct answer : 1. 2.
The current flowing in a conductor is proportional to a) drift velocity b) 1/area of cross section c) 1/no. of electrons d) square of area of cross section If the length of a copper wire has a certain resistance R, then on doubling the length its specific resistance
3. 4.
5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
18.
nAXi
26.
d
a
R
b ) -
1 -
0
d)nR
1kWh equals a)3.6x10 J b) 3.9x10 J .c)3.9x10 J d)3.6x10 J The unit of mobility is a)m s' b) m V s c)mVs d)m V s If R, and R , are resistance of a given coil at the temperature t, and t^, then the temperature coefficient of resistance of the material is 6
2
9
1
2
6
1
5
1
2
1
1
2
a )
25.
n e V
c) I = — — d) I = nAV e G ill When the diameter of a conductor is doubled, its resistance a) decreases twice b) decreases four times c) increases two times d) increases four times A cell of emf 2.2V sends a current of 0.2A through a resistance of 10Q. The internal resistance of the cell is a) 0.1ft b)2Q c) 1 0 d)1.33Q When n resistors of equal resistance R are connected in series the effective resistance is
R +R
2
24.
T
b) I = nAV E
R -R,
23.
20
d
n
22
d) will remain the same
1
a ) 19. 20. 21.
c) will become 4 times
19
T
17.
b) will become-^th
If the resistance of a coil is 2Q at 0°C and a = 0.004/°C then its resistance at 100°C is a)1.4fl b)8Q c)4Q d) 2.8Q If the charge of an electron is 1.6x10- C, how much time 1 0 electrons will take to flow through a point, so that the current is 200mA? a) 100s b)10s c)80s d) 60s * mho n r is the unit of a) resistivity b) conductivity c) conductance d) current density The ratio of voltage to the current is called a) conductance b) resistance c) resistivity d) conductivtiy The tolerance level of red ring at one of a carbon resistor is a) 2 % b)5% c)1% d)10% The colour codes found in a carbon resistor are yellow, violet and orange. The value of the resistor is a)56KQ b)65KQ c) 47KQ d) 76Q A charge of 60C passes throuah an electric lamp in 2 minutes. Then the current in the lamp is a) 30A" b) 0.5A c) 1A d) 5A A toaster operating at 240V has a resistance 120Q. The power is a)400W b)2W c)480W • d) 240W Resistance of a metal wire of length 10cm is 2Q. If the wire is stretched uniformly to 50cm, the resistance is a)40Q b) 10Q c) 5 Q d)50Q In the case of insulators, as the temperature decreases, the resistivity a) decreases b) increases c) remains constant d) becomes zero When two 1Q resistances are in parallel their effective resistance is a)0.5Q b)1Q c)2Q d)4Q The transition temperature for mercury is ' a)4.2K b)4.2°C c)2.4°C d) 2.4K The relation between current and drift velocity is a) I =
16.
a) will be doubled
a
' Rft - R ^ 2
2
»
a
~ R t, - R , t 2
R ; +Rf
t
2
c ) a
' R t, - R , t 2
2
R -R, 2
d )
a
~ R,t - R V 2
2
According to Faraday's law of electrolysis, when a current is passed, the mass of the ions deposited •• the cathode is independent of a) current b) charge c) resistance d) time Nichrome is used as the heating element because it has a) low specific resistance b) low melting point c) high specific resistance d) high conductivity In the experiment to verify if Joules' law, when the current passed through the circuit is doubled keeping resistance (R) and time of passage of current (t) constant, heat of the liquid. a) increases twice b) increase four times c) increases sixteen times d) remains constant Peltier coefficient at a junction of a thermocouple depends on a) the current in the thermocouple b) the time for which current flows c) the temperature of the junction d) the charge that passes through the thermocouple Of the following devices, which has small resistance a) Ammeter of range 0-1 OA b) Ammeter of range 0-1 c) Moving coil galvanometer d) Voltmeter
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Xil-One M a r k - P h y s i c s 27.
28.
29.
-2-
Which of the following produces large Joule heating effect? a) 3A current through 1 Q resistor for 1 second b) 1A current through 3 Q resistor for 2 second c) 2A current through 1 Q resistor for 2 second d) 2A current through 2 Q resistor for 1 second Fuse wire is an alloy of a) copper 3 5 % and lead 6 5 % b) lead 37% and tin 6 3 % c) lead 73% and copper 2 7 % d) silver 3 5 % and tin 6 5 % If 9 0 and 0 are temperature of cold junction, inversion temperature and neutral temperature respectively the correct equation is 3)9,-0,.= 2 0 b)0 =2 0 - 0 c)0 =0 +2 0 cl)0 = 2 0 0 The unit of Thomson coefficient is a) Volt b) ampere - second c) volt per°C d) no unit In a thermocouple, the temperature of the cold junction is -30°C and the neutral temperature is 270°C. The temperature of inversion is a)520°C b)540°C c) 500°C d) 570°C Fuse wire has a) high resistance and high melting point b) low resistance and low melting point c) high resistance and low melting point d) low resistance and high melting point For a given thermocouple is a constant. ' a) thermo emf b) neutral temperature c) inversion temperature d) thermo current The period of revolution of a charged particle inside a cyclotron does not depend on a) the magnetic induction b) the charge of the particle c) the velocity of the particle d) the mass of the particle In a tangent galvanometer, for a constant current, the deflection is 30°. The plane of the coil is rotated through 90°. Now, for the same current, the deflection will be a) 30° b)60° c)90° d)0° In a tangent galvanometer, a current of 1A produces a deflection of 30°. The current required to produce a deflection of 60° is a)2A b)1.5A c)3A d) 4A The unit of reduction factor is a) ampere b) henry c) henry / metre d) no unit Which of the following equations represents Biot - Savart law? C
n
c
30. 31.
33. 34.
35.
36.
37. 38.
7 -!^L
X
a)
39.
40. 41.
42.
43.
B
d B
~
2
b)
^ d B
n
~
^
n
o l d l s i
"*
a )
46.
48. 49. 50.
c +
^oldlxT y—
n
r» noWlxT ' v—
d) dB =
J£l_
juo I
2;ra
b)
"ST
J£l_
c)
d)
4xa
An electron is moving with a velocity of 3 x 10 ms' perpendicular to a uniform magnetic field of induction 0.5T. The force experienced by the electron is a)2.4x10 N b) 13.6 x 1 0 N c) 13.6 x 10" N d)zero When the number turns (n) in a galvanometer is doubled, current sensitivity a) remains constant b) decreases twice c) increases twice d) increases four times The magnitude and direction of the magnetic Lorentz force is given by 6
a) F = ( V x B ) 47.
c) dB =
2
1 3
45.
->
c
The torque on a rectangular coil placed in a uniform magnetic field is large, when a) the number of turns is large b) the number of turns is less c) the plane of the soil is perpendicular to the field d) the area of coil is small Phosphor - bronze wire is used for suspension in a moving coil galvanometer, because it has a) high conductivity b) high resistivity c) large couple per unit twist d) small couple per unit twist A galvanometer of resistance G is shunted with S. The effective resistance of the combination is R a . Then, which of the following statement is true? a) G is iess than S b) S is less than R a but greater than G c) Ra is less than both G and S d) S is less than both G and R a An ideal voltmeter has a) zero resistance b) infinite resistance c) finite resistance iess than G but greater than zero d) resistance greater than G but less than infinity Magnetic induction at a distance 'a' from an infinitely long straight conductor carrying a current I and placed in a medium of permeability u. is HQ I
44.
Test N O . 2
1
2 7
b) F = q ( V x B )
11
c)
F
VxB;
d) F - V(qxB)
Thermopile is used to a) measure temperature b) measure current c) detect thermal radiation d) measure pressure Which of the following principle is used in a thermopile? a) Thomson effect b) Seebeck effect c) Peltier effect d) Joule's effect In which of the following pairs of metals of a thermocouple, the emf is maximum? a)Fe-Cu b)Cu-Zn c)Pt-Ag d)Sb-Bi The torque experienced by a rectangular current loop placed perpendicular to a uniform magnetic field is a) finite maximum b) zero c) finite minimum d) infinity
a I A N U A K U - All
T i m e : 45 minutes PHYSICS * [Electromagnetic induction and Alternating current] Choose the correct answer : 1. 2. 3.
;
"
Who demonstrated that a current carrying conductor is associated with a magnetic field? a) Lenz b) Michael Faraday c) Christian Oersted d) Fleming The angle between the plane of the coil and the area vector of the coil is a) * / . b) 7i c) 2TC d) zero A coil of area of cross section 0.5m with 10 turns is in a plane which is perpendicular to an uniform magnetic field 0.2Wb/m . The flux through the coil is a) 100 Wb b) 10 Wb c) 1 Wb d) zero An emf of 12V is induced when the current in the coil changes at the rate of 40As . The coefficient of self induction of the coil is a) 0.3 H b) 0.003H c) 30H d)4.8H Lenz's law is in accordance with the law of conservation of a) charges b) flux c) momentum d) energy Magnetic field through a coil having 200 turns and cross sectional area 0.04m changes from 0.1 Wbnr to 0.04 Wbnrr in 0.02s. The induced emf is a) 12V b)100V c)24V d) 10V The self - inductance of a straight conductor is a) infinity b) very large c) very small d) zero The unit henry can also be written as a)VsAb)WbAc)fiS d) all A current passing through a coil of self inductance L changes from 4A to 2A in 2s. The induced emf is 2
2
4. 5. 6.
1
2
2
7. 8.
2
1
9.
1
equal to 10.
a) 2L
L c) — volt
b) L volt
d) 1 volt
The energy stored in an inductor of inductance L when the current passing through it reaches its maximum value I from zero is given as o
a)2Ll 11. 12. 13. 14. 15. 16. 17.
0
b) - L I
'
0 2
C
)2L I 2
d) - L I
0
2
0
A DC of 5A produces the same heating effect as an AC of a) 50A rms current b) 5A peak current c) 5A rms current d) 50A peak current The part of the AC generator that passes the current from the coil to the external circuit is a) field magnet b) split rings c) slip rings d) brushes The coefficient of self induction of a solenoid is independent of a) the number of turns in coil b) the area of cross section of the coil c) the length of the coil d) the current passing through the coil Electromagnetic induction is not used in a) transformer b) room heater c) A.C. generator d) Choke coil The rms value of a.c. voltage with peak of 311 V is a) 220 V b)311V c)180V d) 320 V Which of the following devices does not allow d.c. to pass through? a) Resistor b) Capacitor c) Inductor d) all of these An aircraft having a wingspan of 20.48m files due north at a speed of 40ms . If the vertical component of earth's magnetic field at the place is 2 x 10 T. Calculate the emf induced between the ends of the wings. a)-10" V b)-2x10*V c)-0.016 V d)-2x10" V In an a.c. circuit -1
_5
6
18.
4
a) the average value of current is zero 19.
20.
b) the average value of square of current is zero
c) the average power dissipation is zero d) the rms current is ^2 times of peak current A rectangular coil is uniformly rotated in a uniform magnetic field such that the axis of rotation is perpendicular to the direction of the magnetic field. When the plane of the coil is perpendicular to the magnetic field a) (i) magnetic flux is zero, (ii) induced e.m.f. is zero b) (i) magnetic flux is maximum, (ii) induced e.m.f. is maximum c) (i) magnetic flux is maximum, (ii) induced e.m.f. is zero d) (i) magnetic flux is zero, (ii) induced e.m.f. is maximum The instantaneous value of an a.c. is given as i = 42.42 sin 50 rr, t. The rms value of the current is
50 a)42.42A
b)50^A
c) ~fT A
d) 30A
21.
When a current in a coil is changed at the rate of 8 As"* the induced e.m.f. in another coil is 50mV. The mutual inductance between the coil is a)6.25mH b) 40 mH c) 40 H d) 6.25H
22.
The effective value of alternating current is
23.
In a three phase AC generator, the three coils are fastened rigidly together and are placed from each other by an angle a) 90° b)180° c) 120° d)60° The generator rule is a) Fleming's left hand rule b) Fleming's right hand rule c) Lenz's law d) Maxwell right hand cork screw rule
24.
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a) ~
b)
c) I V 2 d) 2 I o
0
25.
If the flux associated with a coil varies at the rate of 1 Wb/minute then the induced emf is
1 a) 1V 26. 27. 28. 29. 30. 31. 32. 33.
b) — V 60
c) 60V
Transformer works on a) AC only b) DC only c) both AC and DC d) AC more effectively than DC Which of the following can not be stepped up in a transformer? a) input current b) input voltage c) input power d) all Hysteresis loss in a transformer can be minimised using the core made of a) stelioy b) mumetal c) thick wire d) Iron The r.m.s. value of a.c. is of the peak value. a) 50% b)70.7% c) 14.14% d) 75% Eddy current loss in a transformer is due to a) leakage of magnetic flux b) heat produced in the primary c) repeated magnetisation and demagnetisation of the iron core d) varying magnetic flux A power of 11000W is transmitted at 220V. The power loss when transmitted through a wire of resistance R is a)2500RJ b)11000RJ c)22000RJ d) 220000R J The secondary of a transformer is connected to a machine of power 550W which works at 110V If the voltage connected to the primary is 220V, the current in the primary is a)55A b)0.4A c) 2.5A d)44A In a stepdown transformer, which is correct? a)E>E b)l >l c)N
34. 35. 36.
d) 0.60V
p
s
p
s
600 factor is 37.
a) 5
b) 0.2
100
c)
d)
In an a.c.circuit with an inductor, a) voltage lags current by %
b
c) current lags voltage by ^
) voltage leads current by x
d) current lags voltage by n
38.
The quality factor (Q) of an RLC circuit is
39.
In an RLC series a.c. circuit the phase difference between current and voltage is 30°. The reactance of the circuit is 17.32ft. The value of resistance is a) 30ft b)10Q C) 17.32ft d) 1.732Q
40.
In an AC circuit the applied emf e = E sin (wt + A) o
a) A'2
b)*A > /A
n
41.
%
'©ads the current I = l sin (wt - % ) by 0
c)n
u
d)0
The power factor of a choke coil is
J « « Vr +
b
42. 43. 44. 45. 46. 47. 48. 49. 50
2
2
2
2
2
ONE MARK SPECIAL TEST
Test No. 4
STANDARD - XII
Time : 45 minutes
PHYSICS
Marks : 50
[Electromagnetic waves and wave optics] Choose the correct answer : 1.
In an electromagnetic wave a) power is equally transferred along the electric and magnetic fields b) power is transmitted in a direction perpendicular to both the fields c) power is transmitted along electric field d) power is transmitted along magnetic field
2.
In an electro magnetic wave the phase difference between electric field g and magnetic field g a) / n
b) Tt/
2
c) n
t
is
d) zero
3.
Electromagnetic waves are c) may be longitudinal or transverse
4.
H , e are the permeability of free space and permittivity of free space and C is the velocity of light, 0
a) transverse b) longitudinal d) neither longitudinal nor transverse
0
then a) C = ju s 0
b)
0
C =
1
1 c ) C =
5. 6. 7. 8. 9. 10. 11.
12. 13.
14.
d)C=
^p e 0
b) XaA <
4
c) XaA
y
.
K
d)
*-«-£r
If v is the frequency of the incident radiation of V, is the frequency of the scatter radiation, then 0
Raman shift is
a) o - u n
b) v, - v
s
c)
o
d) o
16.
17.
0
Electromagnetic waves are a) deflected by electric field b) deflected by magnetic field c) deflected by ionised space d) not deflected by electric, magnetic and ionised fields The existence of electromagnetic was confirmed experimentally by a) Hertz b) Maxwell c) Faraday d) Huygens Which electromagnetic radiation is used to preserve food? a) Infra red b) Ultra violet c) X rays d) gama rays Which electromagnetic radiation is used to study molecular structure? a) X rays b) Infra red c) microwaves d) Ultra violet Atomic spectrum should be a) pure line spectrum b) emission band spectrum c) absorption line spectrum d) absorption band spectrum When ultra violet fight is incident on certain substances, they emit visible light. This phenomenan is called a) photo electric effect b) phosphorescence c) scattering of light d) fluorescence Which theory says^ the velocity of light in the denser medium is greater than the velocity of light in rarer medium? ' a) Corpuscular theory b) Quantum theory c) Electro magnetic theory d) Huygens wave theory According to corpuscular theory, the sensation of different colours is due to different of the corpuscles. a) velocities b) kinetic energies c) sizes d) masses If the wavelength of the light is reduced to one fourth, then the amount of scattering is a) increases by 16 times b) decreased by 16 times c) increased by 256 times d) decreased by 256 times If A is the amount of scattering of wave length k, then which is correct? a) XaA
15.
V^:
s
Raman shift depends on a) the incident radiation b) the scattered radiation c) both on the incident and scattered radiations d) the characteristic of the substance which produces Raman effect A beam of monochromatic light enters from vacuum into a medium of refractive index pThe ratio of wavelengths of the incident and refracted waves is a) M : 1 b) 1 : n c) u : 1 d) 1 : n 2 A linear source of light will give rise to wave front. a) plane b) cylindrical c) spherical d) circular If i is the angle of incidence, the angle between the incident plane wavefront and the normal to the reflecting surface is a) i b) 90 - i c) 90 + i d) i - 90 Refractive index of glass is 1.5. Time taken for light to pass through the glass plate of thickness 10cm is a)2x10- s b)2x10- s c)5x10" s d)5x10" s The path difference between two monochromatic light waves of wavelength 4000A is 2 x 1 0 m The phase difference between them is 2
18. 19. 20.
8
21.
23.
8
1 0
7
a)n
22.
1 0
b)2w
C)3TC/2
d)n/2
Waves from two coherent sources interfere with each other. At a point where the trough of one wave superposes with the trough of the other wave, the intensity of light is a) maximum b) minimum c) zero d) nochange A ray of light travelling in air and getting reflected at the surface of a denser medium, undergoes an
3X 24.
additional path difference of a) 2 X b) X c) — When white light is incident on a soap bubble, it appears coloured. It is due to a) reflection b) total internal reflection c) interference
X d) — d) diffraction
XII-One M a r k - P h y s i c s -2- , Test HO. 4 25. When a drop of water is introduced between the glass plate and plane convex lens in Newton's rings system, the ring system a) contracts b) expands '•« c) remains same d) first expands, then contracts 26. In Young's experiment the band width is measured as 2mm with a light of wavelength 6000A. If the entire apparatus is immersed in a liquid of refractive index 1.33, the band width is a) 2 66mm b) 1.5mm c) 0.665mm d) 3mm 27. The ratio of radii of first three Newton's dark rings is a) 1 : 2 : 3 28.
29.
30. 31.
b) 1 : 4 : 9
c) 1 : 3 : 5
34. 35.
n
!t1
37.
38. 39. 40. 41.
'2
n
r
r„
n
r
n
A diffraction pattern is obtained using a beam of red light. What happens if the red light is replaced by blue light? a) bands disappear b) no change c) diffraction pattern becomes narrower and crowded together d) diffraction pattern becomes broader and farther apart A light of wavelength 6000A is incident normally on a grating 0.005m wide with 2500 lines. Then the maximum order is a) 4 b) 2 c) 1 d) 3 The width of a ruling drawn on a glass piece is 12|am. The width of a slit is 8jxm. The number grating element is a) 20000 b) 40000 c) 2000 d) 50000 A light of wavelength 6000A falls normally on a thin air film, 6 dark fringes are seen between two points. The thickness of the air film is a)3.6x10*m b)1.8x10" m c)1.8x10*m d)3.6x10 m The frige width obtained in Young's double slit experiment while using a light of wavelength 5000A is 0.6cm. If the distance between the slit and screen is halved, the width of the fringe will be a) 3mm b) 1.2 cm c) 2.5cm d) 2.5mm In a Newton's rings experiment the diameter of certain order of dark ring is measured to be double that of second ring. What is the order of the ring? a) 4 b)6 " c)12 d)8 Fraunhofer diffraction pattern is easier to observe by a) a microscope b) naked eye c) a spectrometer d) a concave lens The refractive index of the medium, for the polarising angle 60° a) 1.732 b) 1.414 c) 1.5 d) 1.468 Double refraction was discovered by a) Brewster b) Bartholinus c) Nicol d) Fresnel i is the polarising angle, r is the angle of refraction, then the correct relation is a ) r - i = 90 b ) i - r = 90 c ) i + r = 90 d)i+r=180 When a ray of light is incident on a glass surface at the polarising angle of 57.5^ the angle between the incident ray and the reflected ray is a) 57.5° ' b)32.5° c) 115° . d) 50° Un polarised light passes through a tourmaline crystal. The emergent light is analysed by an analyser. When the analyser is rotated through 90°, the intensity of light a) remains uniformly bright b) remains uniformly dark c) varies between maximum and minimum d) varies between maximum and zero A ray of light is incident on a glass plate at the polarising angle 57.5°. The angle between the reflected ray and the refracted ray is a) 57.5° b) 32.5° c) 115° d) 90° In a plane diffraction grating, the unit of grating element is a) no unit b) metre c) metred) degree Of the following, which one is uniaxial crystal? a) Quartz b) Mica c) Aragonite d) Topaz A ray of light passes from a denser medium into a rarer medium. For an angle of incidence of 45°, the refracted ray grazes the surface of separation of the two media. The refractive index of the denser p
42.
43.
44. 45.
mm and
n
7
36.
V2 : V3
77 mm. What is the value of m? a) 10 . b) 2 c)4 d) 8 In young's experiment the third bright band for wavelength of light 6000A concides with the fourth bright band for another source in the same arrangement. The wave length of the another source is a)4500A b)6000A c) 5000A d) 4000A In Newton's ring experiment, if the radius of 2nd dark ring is 1.5mm. What is the order of the ring whose radius is 3mm? a) 4 b) 6 c) 8 d) 12 in Newton's ring experiment, r is the radius of n dark ring in air and r is the radius of the same ring in liquid. Then, the refractive index of the liquid is
r
33.
:
In Newton's ring experiment, the radii of the mth and (m+4) th dark rings are respectively
2
32.
d) 1
7
p
p
1
46. 47.
medium is 48. 49.
50.
V3
a) —
b)
1
C)
d) 2
In Newton's ring experiment, light of wavelength 5890 A is used. The order of the dark ring produced when the thickness of the air film is 0.589ji m is a) 2 b) 3 c) 4 d) 5 The optical rotation doesnot depend on a) concentration of the solution b) wave length of light used c) intensity of light used d) temperature of the solution Which of the following is not an opticaily active material? a) Quartz b) Sugar crystal c) Turpentine oil d) Calcium chloride
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********
O
I H I \ U M I \
-
A l l
Time : 45 minutes PHYSICS Marks : 50 [Atomic Physics and Dual nature of Radiation and Matter & Relativity (Unit 6 & 7)] Choose the best answer : 1. 2.
3.
4.
The pressure at which the walls of the glass discharge tube fluoresce with green colour is a) 0.001 mm of Hg b)0.01mmofHg c)0.1mmofHg d)1mmofHg Cathode rays possess a) momentum but not kinetic energy b) kinetic energy but not momentum c) both momentum and kinetic energy d) neither momentum nor kinetic energy The characteristics of cathode rays depend on the a) nature of the cathode b) nature of the gas enclosed in the discharge tube c) nature of the anode d) neither the nature of anode, cathode nor the nature of the gas enclosed in the discharge tube A narrow electron beam passes undeviated through an electricifield E = 3 x 10 V/m and an overlapping magnetic field B = 2 x 10 W b / m . The electron motion, electric field and magnetic field are mutually perpendicular. The speed of the electron is a) 60msb) 10.3 x 1 0 m s c) 1.5 x 10 ms" d) 0.67 x 1 0 msAccording to Rutherford atom model, the spectral lines emitted by an atom is a) continuous spectrum b) line spectrum c) band spectrum d) continuous absorption spectrum The ratio of radii of first three Bohr orbit of the hydrogen atom is 4
-3
1
5. 6.
7
a)1:4:9 7. 8.
9.
10.
2
1
7
1
'2'3
b) 1 : 2 : 3
7
1
WUJ2:&
G)V
The direction of the electric field in Millikan's oil drop experiment is a) down wards b) upwards c) first upwards then down words d) first downwards then upwards In Millikan's oil drop experiment the plates A and B are separated by a distance 16mm and the potential difference applied between them is 10,000 Volt. The electric field between the plates is a)625V/m b)6.25V/m c)62500V/m d)625000V/m The ascending order of specific charge of electron, proton, neutron, alpha particle will be a) electron, proton, neutron, alpha particle b) alphaparticle, neutron, electron, proton c) proton, electron, alphaparticle, neutron d) neutron, alphaparticle, proton, electron Wave number is defined as the number of waves a) produced in one second b) in a distance of 1 metre c) in a distance of X metre d) in a distance of 3 x 10 metre According to Bohr's postulates, which of the following quantities take discrete values? a) Angular momentum b) Kinetic energy c) Momentum d) Potential energy If R is Rydberg's constant, the minimum wavelength of hydrogen spectrum is 1 R 4 a ) ~ b ) O d)R 8
11. 12.
13.
A C o o l i d g e tube operates at 18600V. The maximum frequency of x - radiation emitted from it is a)4.05x10 Hz b)4.5x10 Hz c) 45.5 x 1 0 Hz d ) 4 0 . 5 x 10 Hz X ray is a phenomenon of conversion of a) kinetic energy into radiation b) momentum into energy c) energy into mass d) mass into energy The elliptical orbits of electron in the atom were proposed by a) J.J.Thomson b) Bohr c) Sommerfeld d) de Broglie In Hydrogen atom which of the following transitions spectral line of maximum frequency a) 6 - > 2 b)2->1 c)4->3 * d)5->2 The first excitation potential energy or the minimum energy required to excite the atom from ground state of hydrogen atom is a) 13.6 eV b) 10.2 eV c) 3.4 eV d) 1.89 eV In holography which of the following is / are recorded on the photographic film? a) Amplitude only b) Frequency only c) Amplitude and phase d) Frequency and phase When an electron jumps from M shell to the K shell, it gives a)MJine b) K, line c) L line d) K line In hydrogen atom, which of the following transitions produces spectral line of maximum wavelength? a) 2 - > 1 b)4->1 c)6->5 d) 5 -> 2 If u is the frequency of characteristic x - ray line emitted by a target element of atomic number z, th^n 1 8
14. 15. 16. 17. *18. 19.
l 8
18
8
a
20. 21.
Mosley's iawis 22.
23. 24.
a) vaz
) uaz'
c
2
d
vaz''
)
In an X ray tube, the intensity of X ray beam is increased by a) increasing the filament current b) decreasing the filament current c) increasing the target potential d) decreasing the target potential In Sommerfeld atom model, for a given value of n. the number of values that / can take is a) n b) n + 1 c) 2n + 1 d) n -1 Which one is correct with respect to Sommerfeld atom model?
a _ n a )
25.
b) ucc
a
b~/7I
a_/ +l b
)
b~T~
C
)
a_2/ + l b - ~ V
a
d )
b
=
_
n
2/7I
The wave number of a spectral line of hydrogen atom is equal toRydberg's constant. The line is a) first line of Lyman series b) series limit of hyman series c) first line of P fund series d) series limit of P fund series
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-2-
Xll-One Mark-Physics
Test NO.5 R
26. 27.
R a ) j 28. 29.
30.
31. 32. 33. 34.
9
16
b ) -
c )
5R d) ~z^r
25 d )
T
T
:
2;r r
r
b) —
c) 3r
d) 3(2 % r)
The momentum of the electron having wavelength 2A is a)3.3x10- kgmsb) 6 . 6 x 1 0 k g m s c) 3 . 3 x 1 0 k g m s d) 6.6x10- kgmsWhen an electron is accelerated with a potential difference V, its de Broglie wavelength is proportional 24
36.
36R
In Sommerfeld atom model, the principal quantum number n = 3, which of the following subshells represents circular orbit? a) 3s b) 3p c) 3d d) 3f The direction of viscous force in Millikan's oil drop experiment is a) always downwards b) always upwards c) opposite to the direction of motion of the oil drop d) either upwards or downwards When an electric field is applied to an atom, each of the spectral lines split into several lines. This effect is known as a) Zeeman effect b) Mosiey's effect c) Raman effect d) Stark effect The Chromium ions doped in the ruby rod a) absorbs red light b) absorbs blue light c) emits green light d) absorbs green light In a discharge tube the source of positive rays (canal rays) is a) cathode b) anode c) gas atoms present in the discharge tube d) fluorescent screen The ionisation potential of hydrogen atom is a)13.6eV b)-13.6eV c) 13.6 V d)-13.6 V If the radius of third Bohr orbit in hydrogen atom is r, then the de Broglie wave length of electron in this orbit is a) — r —
35.
3R
The wavenumber for Balmer's first line is a) — b) ~ y c) -; If R is Rydberg constant, the shortest wavelength of Paschen series is
to
1
24
a) V
b) V
1
24
c)
1
1
24
Yi
d) y%
w
37.
If the kinetic energy of the moving particle is E, then the de Broglie wavelength is
38. 39.
The wavelength of matter wave is independent of Einstein's photo electric equation is a) W + h v = -^mv ax b) W + ^mv ™* = h u 2
2m
40. 41.
Ve a) J
U
M |
47.
48.
50.
2
2Ve
Ve
c)
l|2m
w
d)
V m Q
u
'V2m
. The kinetic energy
0
D
,4
20
14
o
0
,c)^-m
b)
0
d
) ^-m
0
The work function of a metal is 6 . 6 2 6 x 1 0 J . The threshold frequency is a) 1 x 1 0 Hz b) 10x10' Hz c) 1 x 1 0 Hz d) 1 0 x 1 0 H z According to special theory of relativity, the only constant in all frames of reference is a) mass b) length c) time d) velocity of light The stopping potential of a metal surface is independent of a) frequency of incident radiation b) intensity of incident radiation c) the nature of the metal surface d) velocity of the electrons emitted If 1 kg of a substance is fully converted into energy, then the energy produced is a)9x10 J b) 9x10 J c) 1 J d)3x10 J The photo electric effect can be explained on the basis of a) corpuscular theory b) wave theory of light c) electromagnetic theory of light d) quantum theory of light When an electron is accelerated by a potential of 100V, its wavelength 1.227A. If the same electron is accelerated by a potential of 1000V, the wave length will be 19
1 6
49.
d) ^ t n v „ = W
a)h(u-u ) b)hu c) h u d)h(u + u ) The work function of a photo electric ms'sria! is 3.3eV. The threshold frequency will be equal to a)8x10 Hz b)8x10 Hz c) 5 x 1 0 H z d)4x10 Hz When a material particle of rest mass m attains half of the velocity of light the mass will he equal to
15
46.
2
A photon of frequency u is incident on a metal surface or threshold frequency u of the emitted photoelectron is
a)-ym 45.
) h u + -^mv max
b) , H —
10
44.
c
Ve
—
0
43.
a) mass b) velocity c) momentum d) charge
At the threshold frequency, the velocity of the electron is a) unity b) minimum . c) zero d) infinite An electron of mass m and charge e accelerated from rest through a potential of V volt, then its final velocity
42.
.
a)0.1227A
19
1 5
24
^_ b) 1 . 2 2 7 x V l O A
l9
8
1.227 c) —prrk
d) 12.27 A
Test No, 6
O N E M A R K SPECIAL T E S T STANDARD - XII PHYSICS [NUCLEAR PHYSICS (UNIT - 8)j
Time : 45 minutes
Marks : 50
C h o o s e the c o r r e c t a n s w e r : 1. 2.
The radius of a nucleus is 5.2F. The number of nucleons in the nucleus is a) 52 b)64 c) 104 d) 128 Which of the followings are isotones? a) U and U b) 0 a n d N c) C and N d) N and C Isotopes have a) same mass number but different atomic numbers b) same proton number and neutron number c) same proton number but different neutron numbers d) same neutron number but different proton numbers The nuclear radius of B e nucleus is a)2.6x10- m b)3.9x10 m c ) 6 . 5 x 10" m d) 1.3 x 1 0 - m The nuclei A F and S i are example of a) isotones b) isomers c) isobars d) isotopes In the following nuclear reaction A F + H e - > x + n the element x is a) Si b) P c) S d) Sn ° The ratio of nuclear density to the density of mercury is about a)1.3x10 b)1.310" c) 1.3 x 1 0 d) 1.3 x 1 0 The energy equivalent of 1amu is a)9.31x10 eV b)9.31x10 eV c) 931 eV d) 93.1 x 1 0 e V The binding energy of ^ F e nucleus is a) 8.8 M e V b) 88 M e V c) 41.3 M e V d) 493 MeV If m is the mass of a proton and m is the mass of a neutron and M is the mass of 0 nucleus, the binding energy of it is a) (8m + 8 m - M)c b) (16m + 8 m - M)c c) (8m + 16m - M)c d) (M - 8 m - 16m )c The nature of the electrostatic force and nuclear force between a proton and a neutron inside a nucleus are respectively a) repulsive and attractive b) zero and attractive c) repulsive and repulsive d) attraction and attractive The half life period of a certain radio active element with disintegration constant 0.0693 per day is a) 10 days b) 14 days c) 140 days d) 1.4 days 9 2
3.
4.
2 3 5
9 2
2 3 6
8
4
1 6
7
1 4
6. 7.
1 4
1 3
3 0
1 5
10.
12.
13.
2
6
1 3
15
0
1
1 5
15
3 0
3
13
4
6
p
6
n
n
2
8
p
n
2
p
n
2
1 6
p
n
2
The time taken by the radioactive element to reduce | times is b) mean life
The half life on N
1 3
c)
2
d
) twice the mean life
is 10.1 minute. Its life time is
a) 5.05 minutes 15.
4
15
a) half life 14.
1 4
5 6
p
11.
7
15
3 0
8
9.
1 4
2 8
10
8
7
1 5
1 3
1 6
1 4
8
1 5
5.
6
b) 20.2 minutes
c) Q^JJ minutes
Choose the correct relation between half life
d) infinity
and decay constant (X). 2.3026 x log,
a) log 2 = e
16. 17. 18.
19.
X
b) X = j / . Iog 2 x 2.3026 c) y T
10
T
2
= X x 2.3026 x loge
22.
1
9 2
24.
~Ty
2 3 2
1 5
1 5
20days? 23.
d) "
2
The ratio of nuclear density of , H to U is a) 1:92 b) 1:232 c) 92:232 d) 1:1 The radio isotope used in agriculture is a) P b) , , N c) P d) „ N a In (J decay a) atomic number decreases by one b) mass number decreases by one c) proton number remains the same d) neutron number decreases by one The fuel used in Kamini (Kalpakkam mini reactor) is a) mixture of carbides of Uranium and Plutonium b) mixture of oxides of Plutonium and Uranium c) ^ U d) U Anemia can be diagnosed by a) P b) P c) F e d) ^ N a The mean life of radon is 5.5 days. Its half life is a) 8 days b) 2.8 days c) 0.38 days d) 3.8 days If 50% of a radio active sample decays in 5 days, how much of the original sample will be left over after 3 2
2 3
1 5
2 3 3
20. 21.
2
Q
a) £
.
1 3
„ ^
1 5
9 2
3 2
2 6
„ I
3 1
2 4
2 3 5
6 9
2 4
d).1
The half life of a radio active element is 300 days, the disintegration constant of the radio active element is a) 0,0231 days b) 0.00231 / day c) 0.00231 day d) 0.0231 / day The nuclear force is due to the continuous exchange of particles called a) leptons b) hyperons c) mesons d) photons
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Xil-One Mark-Physics 25. 26. 27.
2
30.
4
12
M
9 2
8 8
29.
NO 6
Particle that has no charge and no rest mass but travels with velocity of light is a) baryon b) meson c) lepton d) photon These particles are massless and chargeless but they carry energy and spin. They are a) mesons b) photons c) neutron d) neutrinos A radio active element X after emitting three a particles and four p particles is converted into an element Y represented as a)z*Y b) Y*-« c) . Y*d) , Y^ The isotope U successively undergoes three a particles and two p decays. The resulting isotope a) Ra b) Ra c) R a d) ^ R a Which of the following is not a moderator? a) Liquid sodium b) Ordinary water c) Graphite d) Heavy water The number of a and p particles emitted when an isotope U undergoes a and p decays to form ggPb are respectively a) 6,8 b)4,3 c)8, 6 d) 3, 4. Based on quark model, a neutron is represented as a) uud b) udd c) udd* d) u'du In proton - proton cycle four protons fuse together to give a) an alpha particle, two electrons, two neutrinos and energy of 26.7 M e V b) an alpha particle, two positrons, two neutrinos and energy of 26.7 M e V c) a helium atom, two positrons, neutrinos and of energy 26.7 M e V d) an alpha particle, two positrons, two antineutrinos and energy of 26.7 M e V The mass defect of certain nucleus is 0.03 amu. Then its binding energy is a) 27.93 e V b) 27.93 KeV c) 27.93 G e V d) 27.93 MeV Positive rays of same element produce two different traces in Bainbridge mass spectrometer. The positive ions have a) same mass with different velocities b) same mass with same velocity c) different masses with same velocity d) different masses with different velocities 1 amu equals a) 1.66 x 10- kg b) 9.1 x 1 0 kg c) 1.66 x 10" kg d) 9.1 x 10" kg The particles or rays which have the greatest ioning power are a) neutrons b) a - particle c) p - particles d) y - rays Nuclear fission can be explained by a) Shell modei b) Liquid drop model c) Quark model d) Bohr atom model When mass number increases, nuclear density a) increases b) decreases c) remains constant d) may increase or decrease The explosion of atom bomb is based on the principle of a) uncontrolled fission reaction b) controlled fission reaction c) fusion reaction d) thermo nuclear reaction The coolant used in fast breeder reactor is a) ordinary water b) heavy water c) liquid sodium d) boron carbide In a nuclear reaction B e + x -» C + n , x stands for a) alpha particle b) proton c) electron d) deutron Which of the following belongs to Baryon group? a) Photon b) Electron c) Pion d) Proton Slow neutrons are neutrons having energies between a) 1000 eV to 2000 eV b) 2000 eV to 0.05 Mev c) 0 eV to 1000 eV d) 0.5 M e V to 10MeV Which of the following is used to detect the presence of blocks in blood vessels? a), P b) P cJ^Fe d)„Na The intensity of cosmic ray is maximum at the lattitude of a) 90° b)45° c)60° d)zero The average energy released per fission is a)200eV b) 200 M e V c)200meV d) 200 G e V Total charge of the nucleus 0 is a)1.6x10- C b)2.56x 10 C c) 1.28 x 1 0 C d) 2.56 x 1 0 C The radio activity of 1 gram of radium is a) 1 Roentgen b) 1 Curie c) 1 Becquerel d) 1 Disintegration / second Induced radioactivity was discovered by a) Henry Becquerel b) Curie and Chadwick c) Bothe and Becker d) Irene Curie and Joliot In fast breeder reactors a) heavy water is used as moderator b) ordinary water is used as moderator c) graphite is used as moderator ' d) require no moderator A
28.
-2-
z
2
12
z
0
2 3 8
2 2 8
8 8
2 2 9
8 8
2 3 2
9 2
2 3 0
2 3 8
206
31. 32.
33. 34.
35.
31
36. 37. 38. 39.
40. 41. 42. 43. 44.
4
5
45. 46. 47.
3 1
49. 50.
9
6
1 5
8
19
48.
3 1
27
1 2
0
3 2
27
1
5 9
2 4
1 6
1 8
1 8
1 9
www.nammakalvi.weebly.com XII
-
O N E M A R K SPECIAL T E S T PHYSIC d 5) c 15) c 25) d 35) d 45)
S d b b c d
KEY
A N S W E R S ,
(®iurbiSluj6b) 7) 6) a 16) d 17) 26) d 27) 36) d 37) 46) b 47)
d c a b a
8) 18) 28) 38) 48)'
a a d b c
9) 19) 29) 39) 49)
b a b a b
Test N o : 1 10) c 20) b 30) c 40) a 50) d
(JgujtbtSliuso) 6) b 7) 16) b 17) 26) a 27) 36) c 37) 46) b 47)
a c a a c
8) 18) 28) 38) 48)
c d b d b
9) 19) 29) 39) 49)
b a b a d
Test N o : 2 10) c 20) d 30) c 40) d 50) b
a b b d a
(PHYSICS) ( ® i u t b i 5 l u j B 3) 5) d 6) c 7) 15) a 16) b 17) 25) b 26) a 27) 35) a 36) b 37) 45) d 46) b 47)
d c c c a
8) 18) 28) 38) 48)
d a b b b
9) 19) 29) 39) 49)
b c b a d
Test N o : 3 10) b 20) d 30) d 40) c 50) b
4) 14) 24) 34) 44)
c b c d d
( P H Y S I C S ) (giLipiSliutw) 5) d 6) a 7) 15) a 16) d 17) 25) a 26) b 27) 35) c 36) a 37) 45) b 46) a 47)
b a d d
b b a c a
9) 19) 29) 39) 49)
a b a a
C
8) 18) 28) 38) 48)
C
Test N o : 4 10) d 20) d 30) c 40) b 50) d
d b a c b
4) 14) 24) 34) 44)
c a a a b
(PHYSICS) 5) a 15) c 25) b 35) a 45) a
(SojjbiSliueb) 6) a 7) 16) b 17) b 26) d 27) b 36) d 37) a 46) d 47) b
8) 18) 28) 38) 48)
d c c d a
9) 19) 29) 39) 49)
d b c b d
Test N o : 5 10) c 20) c 30) d 40) c 50) c
3) 13) 23) 33) 43)
c b b d c
4) 14) 24) 34) 44)
a d c c d
(PHYSICS) 5) a 15) d 25) d 35) c 45) a
(jgiupiSliueb) 6) b 7) 16) d 17) 26) d 27) 36) b 37) 46) b 47)
c a c b c
8) 18) 28) 38) 48)
a d a c b
9) 19) 29) 39) 49)
d c a a d
Test N o : 6 10) a 20) c 30) c 40) c 50) d
a c d a b
3) 13) 23) 33) 43)
d b d c c
4) 14) 24) 34) 44)
b d c b d
(PHYSICS) 5) C 15) d 25) b 35) d 45) a
(JgiupiSliuso) 6) c 7) 16) c 17) 26) c 27) 36) d 37) 46) b 47)
b a c a c
8) 18) 28) 38) 48)
b a a d d
9) 19) 29) 39) 49)
b a d a b
Test N o : 7 10) a 20) b 30) a 40) c 50) c
2) 12) 22) 32) 42)
b b b a a
3) 13) 23) 33) 43)
b b .b c c
4) 14) 24) 34) 44)
d a a d d
(PHYSICS) 5) a 15) b 25) b 35) b 45) a
(giuibiSlujeo) 6) a 7) 16) a 17) 26) d 27) 36) d 37) 46) b 47)
c d c a c
8) 18) 28) 38) 48)
d a b b c
9) 19) 29) 39) 49)
d c a a d
Test N o : 8 10) c 20) a 30) b 40) d 50) a
a d d b b
2) 12) 22) 32) 42)
d c a d d
3) 13) 23) 33) 43)
c b a a c
4) 14) 24) 34) 44)
b c b c d
(PHYSICS) 5) b 15) a 25) d 35) d 45) b
(SiupLSliueb) 6) c 7) 16) d 17) 26) b 27) 36) c 37) 46) a 47)
a c d c c
8) 18) 28) 38) 48)
d b a b b
9) 19) 29) 39) 49)
b a c a d
Test N o : 9 10) a 20) c 30) d 40) a 50) b
c b c c c
2) 12) 22) 32) 42)
(PHYSICS) 4) d 3) b 5) b a 7) 6) d: c 13) d 14) a 15) b 16) d 17) b 23) b 24) c 25) d 26) a 27) b 33) a 34) c 35) a 36) b 37) a 43) a 44) d 45) b 46) c 47) Note : For Tamil Medium Key - a = <94 & =
a b a a b c
8) 18) 28) 38) 48)
c a c c c d =
9) 19) 29) 39) 49)
C
1) 11) 21) 31) 41)
C a c b d
2) 12) 22) 32) 42)
b d d a a
3) 13) 23) 33) 43)
b d c d c
4) 14) 24) 34) 44)
1) 11) 21) 31) 41)
a d d d c
2) 12) 22) 32) 42)
d b c c b
3) 13) 23) 33) 43)
d a c b c
4) c 14) a 24) b 34) c 44) a
(PHYSICS) 5) b 15) d 25) c 35) d 45) c
1) 11) 21) 31) 41)
2) 12) 22) 32) 42)
a d b c b
3) 13) 23) 33) 43)
c d c d a
4) 14) 24) 34) 44)
1) 11) 21) 31) 41)
b a a a c
2) 12) 22) 32) 42)
d c a c c
3) 13) 23) 33) 43)
a c d d d
1) 11) 21) 3D 41)
b a d d c
2) 12) 22) 32) 42)
c a a c a
3) 13) 23) 33) 43)
D 11) 21) 31) 41)
b b d b a
2) 12) 22) 32) 42)
d a a b d
1) 11) 21) 31) 41)
a d c b a
2) 12) 22) 32) 42)
D 11) 21) 31) 41)
c c d d d
D 11) 21) 31) 41) 1) 11) 21) 31) 41)
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b c d d
Test N o : 10 10) d 20) d 30) a 40) b 50) a
