Physics General Instructions Total marks (75) Attempt ALL questions This exam has two parts, Part A & Part B
• Reading time - 5 minutes • Working time - 2 hours • Board approved calculators may be used
Part A
• Write using black or blue pen • Draw diagrams using pencil • A Data Sheet, Formulae Sheets and Periodic Table are provided at the back of this paper • Write your student number and/or name at the top of every page
Total marks (15) Attempt questions 1-15 Allow about 30 minutes for this part PartB Total marks (60) Attempt questions 16-28 Allow about 1 hour 30 minutes for this part
This paper MUST NOT be removed from the examination room
STUDENT NUMBER/NAME: ………………….
STUDENT NUMBER/NAME:
Part A Total marks (15) Attempt questions 1-15 Allow about 30 minutes for this part Select the alternative A, B, C or D that best answers the question and indicate your choice with a cross (X) in the appropriate space on the grid below. C A B D
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
STUDENT NUMBER/NAME: 1.
A sound wave is observed to change its speed, direction of travel and wavelength, but not its frequency. What can we conclude from this? (A) (B) (C) (D)
The wave has been reflected. The wave has been refracted. The wave has been diffracted. The wave has been superimposed on another wave.
This question refers to the unlabelled graph below.
Which pair of variables, when plotted against each other, would produce a graph like this? (A) (B) (C) (D)
3.
the velocity of a water wave against its wavelength the frequency of a sound wave against its wavelength the amplitude of an electromagnetic wave against its frequency the intensity of a light ray against its wavelength
The diagram shows a light ray passing through a slab of glass.
If the refractive index of the glass is 1.46, what is the angle of refraction inside the slab? (A) (B) (C) (D)
6° 20° 36° 70°
STUDENT NUMBER/NAME:
4.
The graphs show the positions of the same wave 0.2s apart.
What is the maximum possible period for the wave?
(A) (B) (C) (D)
5.
0.4s 0.6s 0.9s 1.0s
The diagram shows a circuit with two resistors.
What is the magnitude of the current flowing through the 4Q resistor? (A) (B) (C) (D)
0.75 A 1.0 A 2.67 A 3.0 A
STUDENT NUMBER/NAME: ......................
6.
The diagrams show the magnetic field around a straight current-carrying conductor PQ, and inside a current-carrying coil. P x x x x x x x x x x x x
Which choice correctly identifies the direction of the currents in the wire and the coil?
7.
In wire In coil (A) from P to Q anticlockwise (B) from P to Q clockwise (C) from Q to P anticlockwise clockwise (D) from Q to P The diagram shows two positions, X and Y, between charged, parallel plates. The electric field inside the plates is shown.
Which statement about the strength of the electric field at X and Y is correct? (A) (B) (C) (D)
8.
The field at X is stronger than the field at Y. The field at Y is stronger than the field at X. The fields at X and Y are of equal strength. We need to know the distance between X and Y in order to determine the electric field strength.
Why are lighting and power circuits in homes different? (A) (B) (C) (D)
All the lights and appliances do not fit onto one circuit. Lights draw less current than most appliances. A larger fuse is required for the lighting circuit. Appliances draw less current than lights.
STUDENT NUMBER/NAME:
9.
A student is concerned about his weight. His friend suggests that he takes his scales to the Moon where he will weigh less. Why do the scales indicate a lower weight on the Moon? (A) (B) (C) (D)
10.
Scales are designed to take into account the acceleration due to gravity on the Earth. Mass decreases on the Moon due to its lower gravitational force. Scales will not give a reading on the Moon - the needle remains at zero. The mass of an object is constant regardless of its position in the Universe.
An engineer has designed a road curving around a hill. The engineer is concerned that vehicles will not be able to travel safely around the bends in the road. To ensure that the vehicles can safely follow the curves, which of the following changes should be made to the design? (A) (B) (C) (D)
11.
Which of the following can NOT be a consequence of a net external force acting on an object? (A) (B) (C) (D)
12.
Increase the radius of curvature; increase the maximum allowable speed for the vehicles. Increase the radius of curvature; decrease the maximum allowable speed for the vehicles. Decrease the radius of curvature; increase the maximum allowable speed for the vehicles. Decrease the radius of curvature; decrease the maximum allowable speed for the vehicles.
acceleration decrease in speed change in direction decrease in weight
Modern cars are designed with crumple zones for safety reasons. Which of the following describes the effect of the crumple zone to the impulse, force and time of a collision in which a car's speed is reduced to zero? Impulse
Force
Time
(A)
Decreased
Decreased
Same
(B)
Decreased
Increased
Decreased
(C) Same
Increased
Decreased
(D)
Decreased
Increased
Same
STUDENT NUMBER/NAME: ..........................
13 .
Which of the following scientists developed a model of the universe before Newton? (A) (B) (C) (D)
14.
Which characteristic of a star is directly related to its colour? (A) (B) (C) (D)
15.
Einstein Friedmann Ptolemy Hubble
composition size gas pressure temperature
In a particular star both hydrogen and helium are reactants in energy producing reactions. To which group of stars does this star belong? (A) (B) (C) (D)
black holes main sequence red giants white dwarfs
;
End of Part A
STUDENT NUMBER/NAME:
Part B Total marks (60) Attempt questions 16 - 28 Allow about 1 hour 30 minutes for this part Answer the questions in the spaces provided. Question 16 (4 marks)
Marks
Discuss the structure of an optical fibre and explain how optical fibres carry light.
STUDENT NUMBER/NAME: Marks Question 18 (3 marks) Draw diagrams to show: (a) A radio carrier wave.
1
(b)
The carrier wave after amplitude modulation.
1
(c)
The carrier wave after frequency modulation.
1
Question 19 (6 marks) In your course of study this year you researched information to determine the underlying physical principles used in the application of physics related to waves on either the Global Positioning System, CD technology, the Internet or DVD technology. Choose ONE of these and discuss these underlying physical principles.
Choose TWO safety strategies used in household circuits. NAME the two strategies and outline how EACH works. (a) (i) Strategy ONE:
2
………………………………………………………………………… ………………………………………………………………………… ………………………………………………………………………… ………………………………………………………………………… (ii) Strategy TWO:
2
………………………………………………………………………… ………………………………………………………………………… ………………………………………………………………………… ………………………………………………………………………… (b) Compare the TWO strategies names above in terms of safety to the user.
A radio-controlled car on a straight track accelerates uniformly from rest to 1.5 ms"1 in 5 seconds. The car continues at constant velocity for 10 seconds and decelerates uniformly to come to rest in 2 seconds. (a)
Draw a velocity-time graph for the data above.
3
(b) Calculate the acceleration at 3 seconds after start
STUDENT NUMBER/NAME:.......................... Question 26 (6 marks) Marks Draw a Hertzsprung-Russell diagram for main sequence stars, red giants and white dwarfs. Include 6 TWO alternative names for the horizontal axis and one name for the vertical axis.
Question 27 (5 marks) Construct a table to compare the properties of alpha, beta and gamma rays. Include the following properties:
nature ionising power penetrating power effect of electric field on the type of radiation
A sound wave is observed to change its speed, direction of travel and wavelength, but not .... System, CD technology, the Internet or DVD technology. Choose .... (a) Describe how you would measure the average speed of a moving object. 3 â¦
The water level in the. cylinder will go up. This new level is recorded V2. From Archimedes principle, the body will displace its own volume of the liquid in which it.
I met a European at the airport. 19. As the weather was cold, I wore the woolen coat. The weather was cold therefore I wore the woolen coat. 20. I received the ...
(xviii) Indian Trade Service, Group 'A' (Gr. III). (xix) Indian Corporate Law Service, Group "A". (xx) Armed Forces Headquarters Civil Service, Group 'B' (Section ...
Figure 3.4: Inclined Mechanic ily Raked Bar Screen. 40 .... Professor T. Casey, University College, Dublin., ..... is best achieved on the contaminated stream.
important information. Shusterman uses CyFi to add to the unwind rulesâe.g., people can ... sentences with capital letters; end with periods? Provide no more than two sentences of context that helps the ... Does your context provide information tha
While reading the notes, try to change the notes into your own words, draw flowcharts, pictures or any other thing that you find useful, according to your own learning style. After having understood the notes, work out the questions that were complet
Did you include the book's title? ⢠Did you underline the book's title? ⢠Did you include the author's full name? ⢠Did you pin down a conflict at work in the text? ⢠Is your description of ... with a capital letter; end ... Does your context
Figure 3.4: Inclined Mechanic ily Raked Bar Screen. 40 .... Professor T. Casey, University College, Dublin., ..... is best achieved on the contaminated stream.
18th April - Yorkshire Wildlife Park visit. 23rd May - FAMILY LEARNING - pirate treasure hunt around the outdoor area. 27th June - Theme Celebration event.
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