CAIE A Level 9702

Physics 2022 · Oct/Nov

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This CAIE A Level Physics paper covers a broad spread of core first-year topics, especially measurement and units, kinematics, forces and momentum, work-energy-power, materials and elasticity, waves and sound, light and optics, and electricity. The questions are mainly multiple-choice, but they test a mix of quick recall, calculations, graph interpretation, and application of physics ideas to unfamiliar situations.…

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Questions & Model Answers 34 Qs

Q1
MCQ 1 mark
Which quantity is a physical quantity? A flavour B kelvin C minute D potential difference
A
flavour
B
kelvin
C
minute
D
potential difference
Q2
Short Answer 1 mark
What is a power of 3.7 MW when expressed in kilowatts?
Q3
MCQ 1 mark
A spring is suspended from a fixed point and a force is applied. The position of a pointer attached to the bottom of the spring against a vertical ruler is recorded. mm. mm. The extension of the spring is determined. What is the percentage uncertainty in the extension? A 1.6% B 1.8% C 8.0% D 16%
A
spring is suspended from a fixed point and a force is applied. The position of a pointer attached
A
1.6% B 1.8% C 8.0% D 16%
Q4
MCQ 1 mark
What is the difference between a scalar quantity and a vector quantity? A A scalar quantity has direction but a vector quantity does not. B A scalar quantity has magnitude but a vector quantity does not. C A vector quantity has direction but a scalar quantity does not. D A vector quantity has magnitude but a scalar quantity does not.
A
A scalar quantity has direction but a vector quantity does not.
B
A scalar quantity has magnitude but a vector quantity does not.
C
A vector quantity has direction but a scalar quantity does not.
D
A vector quantity has magnitude but a scalar quantity does not.
Q5
MCQ 1 mark
A toy car travels on a circular track at a constant speed of 0.50 m s . It passes a point on the track at time t = 0 and takes a time of 40 s to travel once around the track. The magnitude of the average velocity of the car between t = 0 and t = 20 s is v 20. The magnitude of the average velocity of the car between t = 0 and t = 40 s is v 40. What are v 20 and v 40? / m s v 40 / m s A 0.32 0 B 0.32 0.32 C 0.50 0 D 0.50 0.50
A
toy car travels on a circular track at a constant speed of 0.50 m s
A
0.32 0
B
0.32 0.32
C
0.50 0
D
0.50 0.50
Q6
Short Answer 1 mark
The graph shows how the velocity v of an object moving in a straight line varies with time t from t = 0 to t = T. Which graph could represent the displacement s of the object from time t = 0 to t = T
Q7
Short Answer 1 mark
A goods train passes through a station at a steady speed of 10 m s at time t = 0. An express train is at rest at the station. The express train leaves the station with a uniform acceleration of 0.5m s just as the goods train goes past. Both trains move in the same direction on straight, parallel tracks. At which time t does the express train overtake the goods train?A 6 s B 10 s C 20 s D 40 s
Q8
MCQ 1 mark
A constant resultant force F acts on an object of mass m for time t. What is the change in momentum of the object? C Ft D
A
constant resultant force F acts on an object of mass m for time t.
C
Ft D
Q9
MCQ 1 mark
The acceleration of free fall on the surface of planet P is one-tenth of that on the surface of planet Q. On the surface of P, an object has a mass of 1.0 kg and a weight of 1.0 N. What are the mass and the weight of the same object on the surface of planet Q? mass on Q / kg weight on Q / N A 1.0 0.1 B 1.0 10 C 10 10 D 10 100
A
1.0 0.1
B
1.0 10
C
10 10
D
10 100
Q10
Short Answer 1 mark
A parachutist falls from rest from a balloon. The variation with time of the vertical velocity of the parachutist is shown. In which region is the force due to air resistance much greater than the weight of the parachutist? vertical velocity time0
Q11
MCQ 1 mark
Two solid spheres form an isolated system. Sphere X moves with speed 6 cm s in a straight line directly towards a stationary sphere Y, as shown. sphere X sphere Y 6 cm s The spheres have a perfectly elastic collision. After the collision, sphere X moves with speed cm s in the same direction as before the collision. What is the speed of sphere Y?A 2 cm s B 4 cm s C 6 cm s D 8 cm s
B
4 cm s
C
6 cm s
D
8 cm s
Q12
MCQ 1 mark
What is not a necessary requirement of the forces in a couple? A They act in opposite directions. B They act along different lines. C They have the same magnitude. D They produce a resultant force.
A
They act in opposite directions.
B
They act along different lines.
C
They have the same magnitude.
D
They produce a resultant force.
Q13
MCQ 1 mark
A box of length 12 cm and weight 0.43 N is placed on a horizontal table, with the greater part of its length overhanging the edge of the table. The edge of the table acts as a pivot. The centre of gravity of the box is at its geometric centre. To balance the box, a uniform sphere of diameter 2.4 cm is placed inside the box, touching one end, as shown. box table edge of table (pivot) sphere 2.4 cm 12 cm Assume that the forces acting on the box are in the plane of the diagram. What is the minimum mass of the sphere that is needed to maintain the system in equilibrium? A 0.066 kg B 0.13 kg C 0.22 kg D 1.3 kg horizontal. The other rope has a tension of 210 ropes object The object is in equilibrium. What is the mass of the object? A 40 kg B 42 kg C 390 kg D 410 kg
A
box of length 12
A
0.066
A
40
Q15
MCQ 1 mark
A solid cube is floating in equilibrium in liquid mercury. The cube is made of iron of density 7900 kg m The cube floats with 42% of its volume above the surface of the mercury. What is the density of the mercury? A 3300 kg m B 4600 kg m C 14 000 kg m D 19 000 kg m vessel P vessel Q Vessel P tapers outwards and vessel Q tapers inwards, as shown. Both vessels contain a liquid. The depth of the liquid in the vessels is the same. The liquid in vessel P is twice as dense as the liquid in vessel Q. What is the ratio Q of base the on liquid the to due pressure P of base the on liquid the to due pressure
A
solid cube is floating in equilibrium in liquid mercury. The cube is made of iron of density
A
3300
B
4600
C
14
D
19
Q17
Short Answer 1 mark
A motor is used to lift a load vertically upwards. The load has weight W. The motor produces useful power output P. The load is lifted at constant velocity v. Which expression gives the time taken for the motor to lift the load vertically upwards through a distance d
Q18
MCQ 1 mark
A lamp is switched on for 2.0 hours. The power input to the lamp is 1.0 W. The energy given out How much energy is converted to other forms by the lamp? A 120 J B 200 J C 3400 J D 7200 J
A
lamp is switched on for 2.0 hours. The power input to the lamp is 1.0
A
120
Q19
Short Answer 1 mark
An object of mass m is dropped onto the surface of two planets, X and Y, which have no atmosphere. The height from which the object is dropped and the change in gravitational potential energy of the object, for each planet, are given in the table. height/ m change in gravitational potential energy The acceleration of free fall near the surface of planet X is g What is the acceleration of free fall near the surface of planet Y? C 3g X D 4g X
Q20
MCQ 1 mark
A known tensile force acts on a metal wire. The wire does not exceed its limit of proportionality. Which two measurements enable the strain of the wire to be calculated? A the unstretched length of the wire and the cross-sectional area of the wire B the unstretched length of the wire and the extension of the wire C the Young modulus of the metal and the extension of the wire D the Young modulus of the metal and the unstretched length of the wire
A
known tensile force acts on a metal wire. The wire does not exceed its limit of proportionality.
A
the unstretched length of the wire and the cross-sectional area of the wire
B
the unstretched length of the wire and the extension of the wire
C
the Young modulus of the metal and the extension of the wire
D
the Young modulus of the metal and the unstretched length of the wire
Q21
MCQ 1 mark
A wire is extended by different forces. The wire obeys Hooke's law. A graph is plotted to show the variation of a quantity y with a quantity x. What could x and y represent? x y A elastic potential energy extension B extension force C force extension D extension elastic potential energy
A
wire is extended by different forces. The wire obeys Hooke's law.
A
graph is plotted to show the variation of a quantity y with a quantity x.
A
elastic potential energy extension
B
extension force
C
force extension
D
extension elastic potential energy
Q22
Short Answer 1 mark
A wave pulse moves along a stretched rope in the direction shown. Which diagram shows the variation with time t of the displacement s of the particle P in the rope?
Q23
MCQ 1 mark
Which statement about progressive transverse and longitudinal waves is correct? A Particles in a transverse wave have fixed equilibrium positions but those in longitudinal waves do not. B Transverse waves can be polarised but longitudinal waves cannot. C Transverse waves transfer energy but longitudinal waves do not. D Two-source interference can be demonstrated with transverse wa ves but not with longitudinal waves.
A
Particles in a transverse wave have fixed equilibrium positions but those in longitudinal
B
Transverse waves can be polarised but longitudinal waves cannot.
C
Transverse waves transfer energy but longitudinal waves do not.
D
Two-source interference can be demonstrated with transverse wa ves but not with
Q24
MCQ 1 mark
A miniature loudspeaker, initially at rest, falls vertically from a window in a high building. When the speaker has fallen a distance of 10.0 m, it emits a very short pulse of sound of constant frequency 256 Hz in all directions. The pulse of sound, travelling at a speed of 330 m s , is heard by a person leaning out of the window. Air resistance is negligible. What is the frequency of the pulse of sound heard by the person? A 246 Hz B 249 Hz C 267 Hz D 313 Hz m in a vacuum. Which row identifies the regions of the electromagnetic spectrum to which the waves belong? wavelength wavelength A ultraviolet infrared B visible microwave C ultraviolet microwave D visible infrared
A
miniature loudspeaker, initially at rest, falls vertically from a window in a high building. When
A
246
A
ultraviolet infrared
B
visible microwave
C
ultraviolet microwave
D
visible infrared
Q26
MCQ 1 mark
The wavelength of sound in air may be determined by using stationary waves. In one experiment, a loudspeaker produces a sound wave of constant frequency which is reflected directly back along its original path by a metal plate approximately 1 m away. A microphone connected to a cathode-ray oscilloscope (CRO) is moved between the loudspeaker and plate to identify regions of high sound intensity ('loud' spots) and low sound intensity ('quiet' spots). The wavelength of the sound is determined using the least possible number of measured quantities. Which row shows the quantities that are needed? frequency of sound mean separation of 'quiet' spots speed of sound in air A 3 3 7 key B 3 7 3 3 = needed C 3 7 7 7 = not needed D 7 3 7
A
3 3 7 key
B
3 7 3 3 = needed
C
3 7 7 7 = not needed
D
7 3 7
Q27
Short Answer 1 mark
Two progressive waves meet at a fixed point P. The variation with time of the displacement of each wave at point P is shown. 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 displacement time/ s The two waves superpose at point P. What is the resultant displacement at time 0.38 A +1.0 cm B -1.0 cm C +1.8 cm D -1.8 cm
Q28
MCQ 1 mark
In which situation does diffraction occur? A A wave bounces back from a surface. B A wave passes from one medium into another. C A wave passes through a gap in a barrier. D Waves from two identical sources are superposed.
A
A wave bounces back from a surface.
B
A wave passes from one medium into another.
C
A wave passes through a gap in a barrier.
D
Waves from two identical sources are superposed.
Q29
Short Answer 1 mark
Light of a single frequency is incident on a pair of narrow slits that are a distance of 0.10 mm apart. A series of bright and dark fringes is observed on a screen a distance of 2.0 m away. The distance between adjacent bright fringes is 8.0mm. light screen second-order dark fringe slits zero-order bright fringe distance between bright fringes = 8.0 mm2.0 m NOT TO SCALE What is the path difference of the light waves from the two slits that meet at the second-order dark fringe?
Q30
Short Answer 1 mark
Red light of a single wavelength passes through a diffraction grating. Bright dots are formed on a screen, as shown. bright dot screen The red light is replaced with white light. Which diagram, drawn to the same scale, shows a possible pattern of bright light on the screen? A potential difference (p.d.) of 6.0 V is applied between the ends of the wire. What is the average drift speed of the free electrons in the wire?m s m s m s m s
Q32
Short Answer 1 mark
The diagrams show two different circuits. RR R The cells in each circuit have the same electromotive force (e.m.f.) and negligible internal resistance. The three resistors each have the same resistance R. In the circuit on the left, the power dissipated in the resistor is P. What is the total power dissipated in the circuit on the right? C P D 2P
Q33
MCQ 1 mark
The potential difference (p.d.) across a filament lamp is increased. Which statement is correct? A The resistance of the lamp decreases because the temperature decreases. B The resistance of the lamp decreases because the temperature increases. C The resistance of the lamp increases because the temperature decreases. D The resistance of the lamp increases because the temperature increases.
A
The resistance of the lamp decreases because the temperature decreases.
B
The resistance of the lamp decreases because the temperature increases.
C
The resistance of the lamp increases because the temperature decreases.
D
The resistance of the lamp increases because the temperature increases.
Q34
MCQ 1 mark
A metal wire has resistance R. The wire is stretched so that its diameter decreases to 94.0% of the original diameter. The volume of the wire is unchanged. What is the resistance of the stretched wire? A 1.06R B 1.13R C 1.20R D 1.28R connected across a lamp. The lamp has a resistance of 9.3 4.7 9.3 3.0 What is the power dissipated by the internal resistance of the cell? A 0.22 W B 0.43 W C 0.64 W D 1.0 W
A
metal wire has resistance R.
A
1.06R B 1.13R C 1.20R D 1.28R
A
0.22
Q36
MCQ 1 mark
A circuit consists of a battery, a high-resistance voltmeter and four fixed resistors, as shown. The battery has an electromotive force (e.m.f.) of 15.0 V and negligible internal resistance. 24.0 6.0 6.0 9.0 15.0 What is the reading on the voltmeter? A 3.0 V B 6.0 V C 9.0 V D 12.0 V
A
circuit consists of a battery, a high-resistance voltmeter and four fixed resistors, as shown. The
A
3.0
Q37
MCQ 1 mark
A potential divider circuit is designed to detect the difference in temperature between two different places. The cell has electromotive force (e.m.f.) 20 mV and negligible internal resistance. Initially, thermistors X and Y are at the same temperature and have the same resistance. The voltmeter reads 10 mV. X is then placed in a cold environment and its resistance doubles. Y is placed in a warm environment and its resistance halves. What is the new reading on the voltmeter?A 4 mV B 5 mV C 15 mV D 16 mV Which conclusion about the structure of atoms cannot be drawn from this experiment alone? A Most of the atom is empty space. B Most of the mass of an atom is concentrated in the nucleus. C The nucleus contains both protons and neutrons. D The nucleus is charged.
A
potential divider circuit is designed to detect the difference in temperature between two different
A
Most of the atom is empty space.
B
Most of the mass of an atom is concentrated in the nucleus.
C
The nucleus contains both protons and neutrons.
D
The nucleus is charged.
Q39
MCQ 1 mark
Which two particles have opposite charges? A alpha-particle and helium nucleus B antiproton and beta-plus particle C beta-minus particle and electron D positron and proton Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cambridgeinternational.org after the live examination series. Local Examinations Syndicate (UCLES), which is a department of the University of Cambridge.
A
alpha-particle and helium nucleus
B
antiproton and beta-plus particle
C
beta-minus particle and electron
D
positron and proton
Q40
MCQ 1 mark
Which particle is a lepton? A meson B positron C proton D quark
A
meson
B
positron
C
proton
D
quark
Paper Details
Board CAIE
Level A Level
Subject Physics
Code 9702
Year 2022
Session Oct/Nov
Q&A 34 questions
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