Cambridge A Level ยท 9702 ยท Paper 4 ยท A Level structured questions
Physics 9702/42 Feb/March 2018 past paper
Cambridge A Level Physics (9702) Paper 4 (A Level structured questions), variant 2, Feb/March 2018: the question paper and its official mark scheme, 11 questions worth 87 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 11
- Marks
- 100
- Grade A from
- 55
File names: 9702_m18_qp_42 ยท 9702_m18_ms_42
Grade thresholds for 9702/42 Feb/March 2018
The minimum raw marks Cambridge set for each grade on this component (out of 100). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E |
|---|---|---|---|---|
| 55 | 47 | 38 | 30 | 21 |
Topics in this paper
Which syllabus chapters 9702/42 Feb/March 2018 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Magnetic fields | 3 | 23 |
| Medical physics | 2 | 16 |
| Thermodynamics | 1 | 10 |
| Gravitational fields | 1 | 9 |
| Electric fields | 1 | 9 |
| Nuclear physics | 1 | 8 |
| Quantum physics | 1 | 7 |
| Oscillations | 1 | 5 |
Questions in 9702/42 Feb/March 2018
- Question 1
(a) (i) State what is meant by a line of force in a gravitational field. (ii) By reference to the pattern of the lines of gravitational force near to the surface of the Earth, explain why the acceleration of free โฆ
- Question 2
A cylinder contains 5.12 mol of an ideal gas at pressure of โฆ
- Question 3
(a) A mass is undergoing simple harmonic motion with amplitude x0. The maximum velocity of the mass has magnitude v0. On Fig. 3.1, show the variation with displacement x of the velocity v of the mass. โฆ
- Question 4
(a) Explain what is meant by the natural frequency of vibration of a system. (b) A block of metal is fixed to one end of a vertical spring. The other end of the spring is attached to an oscillator, as โฆ
- Question 5
(a) Explain the main principles behind the use of ultrasound to obtain diagnostic information about internal body structures. (b) (i) Define specific acoustic impedance. (ii) Two media have specific acoustic impedances of Z1 and Z2. The magnitudes of the acoustic โฆ
- Question 7
(a) State what is meant by electric potential at a point. (b) The centres of two charged metal spheres A and B are separated by a distance of 44.0 cm, as shown in Fig. โฆ
- Question 9
A thin slice of conducting material has its faces PQRS and VWXY normal to a uniform magnetic field of flux density B, as shown in Fig. โฆ
- Question 10
(a) (i) Define magnetic flux. (ii) State Faradayโs law of electromagnetic induction. (b) A solenoid has a coil C of wire wound tightly about its centre, as shown in Fig. 10.1. coil C solenoid + d.c. supply โ Fig. 10.1 โฆ
- Question 11
Some electron energy bands in a solid are shown in Fig. 11.1. conduction band gap between conduction band and valence band (forbidden band) valence band Fig. 11.1 The width of the forbidden band and the number density of charge carriers โฆ
- Question 12
(a) Suggest two causes of lack of sharpness of an X-ray image. โฆ
- Question 13
(a) (i) Define radioactive decay constant. (ii) Show that the decay constant ฮป is related to the half-life โฆ