Questions 1
Topic – 1.2
Which unit is an SI base unit?
A ampere
B coulomb
C degree Celsius
D gram
▶️Answer/Explanation
Ans A
Questions 2
Topic – 3.1
Which of the following could have the same units as force?
A \(\frac{energy}{distance}\)
B \(\frac{energy}{time}\)
C \(momentum \times distance\)
D \(momentum \times time\)
▶️Answer/Explanation
Ans A
Questions 3
Topic – 2.1
The velocity of an object changes from an initial velocity u to a final velocity v. The vectors represent these velocities.
Which single vector represents the change in velocity of the object?
▶️Answer/Explanation
Ans C
Questions 4
Topic – 2.1
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 \(v = u + 2at^2\)
▶️Answer/Explanation
Ans B
Questions 5
Topic – 2.1
Which calculation produces a vector quantity?
A \(current \times time\)
B final displacement – initial displacement
C\(\frac{work done}{time}\)
D\(\frac{1}{2}\times mass \times (speed)^2\)
▶️Answer/Explanation
Ans B
Questions 6
1.3 Errors and uncertainties.
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%
▶️Answer/Explanation
Ans D
Questions 7
Topic – 2.1
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?
▶️Answer/Explanation
Ans C
Questions 8
Topic – 2.1
An aircraft flies from London to Sydney in a time of 21 hours 40 minutes. The distance travelled is 17 000km. What is the average speed of the aircraft?
A \(2.2 m s^{–1}\)
B \(2.2 \times 10^7 \mu m s^{–1}\)
C \(2.2 \times 10^{11} nm s^{–1}\)
D \(2.2 \times 10^6 mm s^{–1}\)
▶️Answer/Explanation
Ans C
Questions 9
Topic – 3.1
A golf club hits a golf ball. The graph shows how the force F on the ball varies with time t.
Which graph shows how the velocity v of the ball varies with time t ?
▶️Answer/Explanation
Ans B
Questions 10
Topic – 3.1
What is meant by the mass and by the weight of an object on the Earth?
▶️Answer/Explanation
Ans D
Questions 11
Topic – 4.1
A thin horizontal plate of area \(0.036 m^2\) 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
▶️Answer/Explanation
Ans A
Questions 12
3.3 Linear momentum and its conservation.
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.
▶️Answer/Explanation
Ans B
Questions 13
Topic – 2.1
A ball of mass 0.10 kg is thrown towards a stationary vertical bat. The ball hits the bat with a horizontal velocity of \(20 m s^{–1}\).
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 Ns
B 0.50 Ns
C 1.5 Ns
D 3.5 Ns
▶️Answer/Explanation
Ans D
Questions 14
Topic – 4.2
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?
▶️Answer/Explanation
Ans A
Questions 15
Topic – 4.1
A uniform beam PQ rests horizontally on a support at point S.
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
▶️Answer/Explanation
Ans A
Questions 16
Topic – 6.1
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.
Which force does the elastic cord exert on the stone?
A \(\frac{3}{5}T\)
B \(\frac{6}{5}T\)
C \(\frac{8}{5}T\)
D 2T
▶️Answer/Explanation
Ans B
Questions 17
Topic – 5.1
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
▶️Answer/Explanation
Ans B
Questions 18
Topic – 5.1
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.
▶️Answer/Explanation
Ans A
Questions 19
Topic – 7.1
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 \(\frac{1}{2}\) S. How much energy per unit time reaches this smaller surface?
A 4E
B 2E
C E
D \(\frac{1}{2}\) E
▶️Answer/Explanation
Ans B
Questions 20
Topic – 5.2
A steel ball is falling at constant speed in oil. Which graph shows the variation with time of the gravitational potential energy \(E_p\) and the kinetic energy \(E_k\) of the ball?
▶️Answer/Explanation
Ans B
Questions 21
Topic – 6.1
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 \(20 N m^{–1}\)
▶️Answer/Explanation
Ans D
Questions 22
Topic – 6.1
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?
▶️Answer/Explanation
Ans C
Questions 23
Topic – 6.1
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?
A \(\frac{1}{2}Ex\)
B Ex
C \(\frac{1}{2} Fx \)
D Fx
▶️Answer/Explanation
Ans C
Questions 24
Topic – 7.1
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 \(\theta\) to the plane of polarisation of the incident wave. What is the amplitude of the wave that emerges from the filter?
A Acos\(\theta\)
B \(Acos^2\theta\)
C \(A^2 cos\theta\)
D \(A^2 cos^2\theta\)
▶️Answer/Explanation
Ans A
Questions 25
Topic – 7.4
An electromagnetic wave is travelling through a vacuum. What could be the wavelength and period of the electromagnetic wave?
▶️Answer/Explanation
Ans C
Questions 26
Topic – 8.2
Light of frequency \(6.7 \times 10^{14}\)Hz in a vacuum is incident normally on a diffraction grating that contains \(4.0 \times 10^5\) lines \(m^{–1}\). What is the angle between the adjacent second and third order intensity maxima?
A 12°
B 21°
C 33°
D 54°
▶️Answer/Explanation
Ans A
Questions 27
Topic – 7.3
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
▶️Answer/Explanation
Ans B
Questions 28
Topic – 8.1
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.
What are the directions of the velocities of the points 1, 2 and 3 on the string at this instant in time?
▶️Answer/Explanation
Ans D
Questions 29
Topic – 7.5
Which wave cannot be a longitudinal wave?
A a diffracted wave
B a polarised wave
C a reflected wave
D a stationary wave
▶️Answer/Explanation
Ans B
Questions 30
Topic – 7.4
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.
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.
▶️Answer/Explanation
Ans B
Questions 31
Topic – 9.3
What is the unit of resistivity?
A \(\Omega m^{–2}\)
B \(\Omega m^{–1}\)
C \(\Omega \)
D \(\Omega m\)
▶️Answer/Explanation
Ans D
Questions 32
Topic – 9.2
A kettle is connected to a 250V mains supply. What are possible values for the power of the kettle and the current in the kettle?
▶️Answer/Explanation
Ans D
Questions 33
Topic – 9.2
Which circuit results in output voltage \(V_{out}\) increasing with increasing temperature?
▶️Answer/Explanation
Ans C
Questions 34
Topic – 9.3
Four resistors, each of resistance R, are connected as shown.
The total resistance between point X and point Y is 120 \(\Omega\). What is the magnitude of the resistance R?
A 30\(\Omega\)
B 90\(\Omega\)
C 160\(\Omega\)
D 480\(\Omega\)
▶️Answer/Explanation
Ans C
Questions 35
10.1 Practical circuits
A cell with internal resistance is connected to a variable resistor R as shown.
The resistance of R is gradually decreased. How do the current I and the terminal potential difference (p.d.) across the cell change?
▶️Answer/Explanation
Ans C
Questions 36
Topic – 9.3
The diagram shows a circuit with a cell and three resistors with resistances \(R_1\), \(R_2\) and \(R_3\). The cell has negligible internal resistance.
The total resistance of the circuit is \(R_T\). Which equation for \(R_T\) is correct?
▶️Answer/Explanation
Ans D
Questions 37
Topic – 11.1
Hydrogen and deuterium can be represented by the nuclide symbols \( _{1}^{1}\textrm{H}\) and \(_{1}^{2}\textrm{H}\) 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.
▶️Answer/Explanation
Ans D
Questions 38
Topic – 11.2
A radioactive sample decays by emitting \(\beta^-\) particles. The energy released in the decay process is the same for each nucleus that decays, but the \(\beta^-\) particles emitted have a continuous range of kinetic energies. Which statement explains why the \(\beta^-\) 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 \(\beta^-\) particle.
D Some of the energy released is used to create a new nucleon.
▶️Answer/Explanation
Ans B
Questions 39
Topic – 11.1
Which particle is not a fundamental particle?
A electron
B neutrino
C neutron
D top quark
▶️Answer/Explanation
Ans C
Questions 40
Topic – 11.1
What is the charge of an anti-top quark?
A\(-\frac{2}{3}e\)
B\(-\frac{1}{3}e\)
C\(+\frac{1}{3}e\)
D \(+\frac{2}{3}e\)
▶️Answer/Explanation
Ans A