Physics 9702/11 May/June 2024: question paper and mark scheme

Question

Which unit is an SI base unit? A ampere B coulomb C degree Celsius D gram

Question

Which of the following could have the same units as force? energy A distance energy B time C momentum × distance D momentum × time

Question

The velocity of an object changes from an initial velocity u to a final velocity v. The vectors represent these velocities. u v Which single vector represents the change in velocity of the object? A B C D

Question

An object is moving with initial velocity u. The object then moves with uniform acceleration a for time t until it reaches final velocity v. Which equation describes the motion of the object? A u = v – 2at B u = v – at C v = u + at 2 D v = u + 2at 2

Question

Which calculation produces a vector quantity? A current × time B final displacement – initial displacement work done C time 1 D × mass × (speed)2 2

Question

A thermometer can be read to an accuracy of ± 0.5 °C. This thermometer is used to measure a temperature rise from 40 °C to 100 °C. What is the percentage uncertainty in the measurement of the temperature rise? A 0.5% B 0.8% C 1.3% D 1.7%

Question

The diagram shows the path of a golf ball. Which row describes changes in the horizontal and vertical components of the golf ball’s velocity when air resistance is ignored? horizontal vertical A constant deceleration constant acceleration downwards B constant deceleration acceleration decreases upwards then increases downwards C constant velocity constant acceleration downwards D constant velocity acceleration decreases upwards then increases downwards

Question

An aircraft flies from London to Sydney in a time of 21 hours 40 minutes. The distance travelled is 17 000 km. What is the average speed of the aircraft? A 2.2 m s–1 B 2.2 × 107 μm s–1 C 2.2 × 1011 nm s–1 D 2.2 × 106 mm s–1

Question

A golf club hits a golf ball. The graph shows how the force F on the ball varies with time t. F 0 0 t Which graph shows how the velocity v of the ball varies with time t ? A B v v 0 0 0 t 0 t C D v v 0 0 0 t 0 t

Question

What is meant by the mass and by the weight of an object on the Earth? mass weight A its momentum divided by its velocity the work done in lifting it one metre B the gravitational force on it the property that resists its acceleration C the pull of the Earth on it its mass divided by the acceleration of free fall D the property that resists its acceleration the pull of the Earth on it

Question

A thin horizontal plate of area 0.036 m2 is beneath the surface of a liquid of density 930 kg m–3. The force on one side of the plate due to the pressure of the liquid is 290 N. What is the depth of the plate beneath the surface of the liquid? A 0.88 m B 1.1 m C 1.8 m D 8.7 m

Question

Spheres X and Y form an isolated system. The mass of Y is greater than the mass of X. Sphere Y is initially stationary. Sphere X collides elastically with sphere Y. The speed of sphere X before the collision is u. Which statement must be correct? A Sphere X rebounds with a speed that is greater than u, and sphere Y moves off with a speed that is less than u. B Sphere X rebounds with a speed that is less than u, and sphere Y moves off with a speed that is also less than u. C Sphere X rebounds with speed u, and sphere Y remains stationary. D Sphere X remains stationary, and sphere Y moves off with a speed that is less than u.

Question

A ball of mass 0.10 kg is thrown towards a stationary vertical bat. The ball hits the bat with a horizontal velocity of 20 m s–1. 20 m s–1 bat ball The ball rebounds and leaves the bat with a horizontal velocity of 15 m s–1. What is the change in momentum of the ball? A 0.20 N s B 0.50 N s C 1.5 N s D 3.5 N s

Question

An isolated object of negligible weight is acted on by two coplanar forces of the same magnitude. In which diagram is the object in equilibrium? A B C D

Question

A uniform beam PQ rests horizontally on a support at point S. 2.5 m F 60q 0.30 m rope S beam P Q support A rope is attached at one end of the beam. The rope is at an angle of 60° to the vertical and exerts a force F, in newtons, on the beam. What is the moment, in N m, of the force F about the point S? A 1.1F B 1.3F C 1.9F D 2.2F

Question

The diagram shows the dimensions of an elastic cord used to project a stone. The tension in the cord is T when the cord is pulled into the shape shown. 10 cm T 6 cm 16 cm stone T Which force does the elastic cord exert on the stone? 3 6 8 A 5T B 5T C 5T D 2T

Question

A box of weight 40 N is pushed with a horizontal force of 20 N along level ground for a distance of 2.4 m. The box is then lifted at constant velocity through a height of 1.6 m by a vertical force. What is the total work done on the box by the two forces? A 80 J B 110 J C 120 J D 160 J

Question

Which statement about efficiency is correct? A Efficiency does not have a unit. B The joule is a unit of efficiency. C The metre is a unit of efficiency. D The watt is a unit of efficiency.

Question

A plane wave of amplitude A is incident on a surface of area S placed so that it is perpendicular to the direction of travel of the wave. The energy per unit time reaching the surface is E. The amplitude of the wave is increased to 2A and the area of the surface is reduced to 21 S. How much energy per unit time reaches this smaller surface? 1 A 4E B 2E C E D 2E

Question

A steel ball is falling at constant speed in oil. Which graph shows the variation with time of the gravitational potential energy Ep and the kinetic energy Ek of the ball? A B energy energy Ek Ek Ep Ep 0 time 0 time C D Ek Ek energy energy Ep Ep 0 time 0 time

Question

When a force of 0.80 N is applied to a spring, the length of the spring is 90 mm. When a force of 1.30 N is applied to the same spring, its length is 115 mm. The spring obeys Hooke’s law. What is the spring constant of the spring? A 8.9 N m–1 B 10 N m–1 C 11 N m–1 D 20 N m–1

Question

An experiment is carried out using a metal wire to investigate how it responds to a varying tensile force. The cross-sectional area of the wire is constant. Which graph has a gradient that is equal to the Young modulus of the metal? A B extension force 0 0 0 force 0 extension C D stress strain 0 0 0 strain 0 stress

Question

For a wire, Hooke’s law is obeyed for a tension F and extension x. The Young modulus for the material of the wire is E. Which expression represents the elastic potential energy stored in the wire? 1 1 A 2 Ex B Ex C 2 Fx D Fx

Question

A plane polarised wave has amplitude A. The wave is incident normally on a polarising filter. The transmission axis of the filter is at angle θ to the plane of polarisation of the incident wave. What is the amplitude of the wave that emerges from the filter? A A cosθ B A cos2θ C A2 cosθ D A2 cos2θ

Question

An electromagnetic wave is travelling through a vacuum. What could be the wavelength and period of the electromagnetic wave? wavelength period A 1.2 × 10–10 Tm 2.5 Ms B 1.2 pm 2.5 × 1011 Gs C 1.2 × 102 pm 4.0 × 10–10 ns D 1.2 × 103 μm 4.0 ns

Question

Light of frequency 6.7 × 1014 Hz in a vacuum is incident normally on a diffraction grating that contains 4.0 × 105 lines m–1. What is the angle between the adjacent second and third order intensity maxima? A 12° B 21° C 33° D 54°

Question

The siren of a moving police car emits a sound wave with a frequency of 440 Hz. A stationary observer hears sound of frequency 494 Hz. The speed of sound in the air is 340 m s–1. What could be the speed and the direction of movement of the car? A 37 m s–1 directly away from the observer B 37 m s–1 directly towards the observer C 42 m s–1 directly away from the observer D 42 m s–1 directly towards the observer

Question

The diagram shows the shape at one instant in time of part of a stretched string as a wave travels along it from left to right. 1 2 3 What are the directions of the velocities of the points 1, 2 and 3 on the string at this instant in time? point 1 point 2 point 3 A → → → B → ← → C ↑ ↓ ↑ D ↓ ↑ ↓

Question

Which wave cannot be a longitudinal wave? A a diffracted wave B a polarised wave C a reflected wave D a stationary wave

Question

Microwaves are emitted from two sources at points X and Y. The two waves meet at point Z. The diagram shows the paths of the two waves. X Z Y The waves emitted from points X and Y are coherent. What is a direct consequence of the two waves being coherent? A There is a constant difference in the path lengths YZ and XZ. B There is a constant difference in phase between the two waves at Z. C There is a constant non-zero difference in frequency of the two waves at Z. D There is a constant non-zero difference in amplitude of the two waves at Z.

Question

What is the unit of resistivity? A Ω m–2 B Ω m–1 C Ω D Ωm

Question

A kettle is connected to a 250 V mains supply. What are possible values for the power of the kettle and the current in the kettle? power / W current / A A 500 0.5 B 500 5.0 C 2500 0.1 D 2500 10

Question

Which circuit results in output voltage Vout increasing with increasing temperature? A B Vout Vout C D Vout Vout

Question

Four resistors, each of resistance R, are connected as shown. R X R R R Y The total resistance between point X and point Y is 120 Ω. What is the magnitude of the resistance R ? A 30 Ω B 90 Ω C 160 Ω D 480 Ω

Question

A cell with internal resistance is connected to a variable resistor R as shown. cell I R The resistance of R is gradually decreased. How do the current I and the terminal potential difference (p.d.) across the cell change? terminal p.d. current I across cell A decreases decreases B decreases increases C increases decreases D increases increases

Question

The diagram shows a circuit with a cell and three resistors with resistances R1, R2 and R3. The cell has negligible internal resistance. R1 R2 R3 The total resistance of the circuit is RT. Which equation for RT is correct? A R T = R 1 + R2 + R 3 1 1 B RT = + R1 + R 2 R3 1 1 C = RT R1 + R2 + R3 1 1 1 D = + R T R1 + R 2 R3

Question

Hydrogen and deuterium can be represented by the nuclide symbols 11H and 21H respectively. What is a difference between hydrogen and deuterium? A The deuterium atom has twice the number of electrons as the hydrogen atom. B The deuterium nucleus has a charge, but the hydrogen nucleus has no charge. C The deuterium nucleus has less mass than the hydrogen nucleus. D The deuterium nucleus has half the charge per unit mass of the hydrogen nucleus.

Question

A radioactive sample decays by emitting β– particles. The energy released in the decay process is the same for each nucleus that decays, but the β– particles emitted have a continuous range of kinetic energies. Which statement explains why the β– particles are emitted with a continuous range of kinetic energies? A Some of the energy released is given to the remaining nucleons in the nucleus. B Some of the energy released is taken by an emitted antineutrino. C Some of the energy released is used to create the β– particle. D Some of the energy released is used to create a new nucleon.

Question

Which particle is not a fundamental particle? A electron B neutrino C neutron D top quark

Question

What is the charge of an anti-top quark? 2 1 1 2 A – e B – e C + e D + e 3 3 3 3