• 9702 June 2015 Paper 11 Worked Solutions | A-Level Physics

1 C                  11 C                21 C                31 D

2 B                  12 C                22 A                32 B

3 A                  13 A                23 B                33 B

4 D                  14 C                24 D                34 D

5 A                  15 C                25 B                35 C

6 B                  16 C                26 D                36 D

7 D                  17 C                27 A                37 A

8 C                  18 B                28 B                38 C

9 D                  19 D                29 D                39 C

10 D                20 A                30 B                40 B

Notes for some specific questions:


3 - Ans: A.

When a constant braking force is applied to a vehicle moving at speed v, the distance d moved by the vehicle in coming to rest is given by the expression

4 - Ans: D.
A whale produces sound waves of frequency 5 Hz. The waves are detected by a microphone and displayed on an oscilloscope.


8 - Ans: C.
An insect jumps with an initial vertical velocity of 1.0 m s-1, reaching a maximum height of 3.5×10-2 m. Assume the deceleration is uniform.


9 - Ans: D.

A body having uniform acceleration a increases its velocity from u to v in time t. Which expression would not give a correct value for the body’s displacement during time t?

12 - Ans: C.
A child on a sledge slides down a hill with acceleration a. The hill makes an angle θ with the horizontal.


13 - Ans: A. See solution 425 at
A box of mass 8.0 kg rests on a horizontal rough surface. A string attached to the box passes over a smooth pulley and supports a 2.0 kg mass at its other end.


15 - Ans: C. See solution 1054 at

A uniform metre rule is pivoted at the 34.0 cm mark, as shown. The rule balances when a 64 g mass is hung from the 4.0 cm mark.

17 - Ans: C. See solution 1128 at
Which statement is correct?


18 - Ans: B.
The diagram shows a pump called a hydraulic ram. In one such pump the long approach pipe holds 500 kg of water.


19 - Ans: D. See solution 1017 at
A conveyor belt is driven at velocity v by a motor. Sand drops vertically on to the belt at a rate of m kg s–1.


21 - Ans: C. See solution 332 at
What is the shortest distance between the centres of two adjacent atoms?


23 - Ans: B.
The variation with applied force of the extension of a spring is shown in the graph.


24 - Ans: D. See solution 1065 at

A sound wave moves with a speed of 320 m s–1 through air. The variation with time of the displacement of an air particle due to this wave is shown in the graph.

25 - Ans: B.
A wave of frequency 15 Hz travels at 24 m s-1 through a medium.


29 - Ans: D.

A loudspeaker emitting sound of frequency f is placed at the open end of a pipe of length l which is closed at the other end. A standing wave is set up in the pipe.

35 - Ans: C.
The charge that an electric battery can deliver is specified in ampere-hours.


36 - Ans: D.
A battery with e.m.f. E and internal resistance r is connected in series with a variable external resistor.


38 - Ans: C. See solution 993 at
A wire RST is connected to another wire XY as shown.  Each wire is 100 cm long with a resistance per unit length of 10 Ω m–1.