Cambridge A Level · 9702 · Paper 4 · A Level structured questions
Physics 9702/42 Feb/March 2020 past paper
Cambridge A Level Physics (9702) Paper 4 (A Level structured questions), variant 2, Feb/March 2020: the question paper and its official mark scheme, 12 questions worth 100 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 12
- Marks
- 100
- Grade A from
- 66
File names: 9702_m20_qp_42 · 9702_m20_ms_42
Grade thresholds for 9702/42 Feb/March 2020
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 |
|---|---|---|---|---|
| 66 | 59 | 50 | 40 | 30 |
Topics in this paper
Which syllabus chapters 9702/42 Feb/March 2020 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Magnetic fields | 2 | 16 |
| Quantum physics | 2 | 16 |
| Gravitational fields | 1 | 10 |
| Ideal gases | 1 | 10 |
| Oscillations | 1 | 10 |
| Medical physics | 1 | 8 |
| Electric fields | 1 | 8 |
| Nuclear physics | 1 | 8 |
| Waves | 1 | 7 |
| Electricity | 1 | 7 |
Questions in 9702/42 Feb/March 2020
- Question 1
(a) Define gravitational potential at a point. (b) TESS is a satellite of mass 360 kg in a circular orbit about the Earth as shown in Fig. 1.1. Earth radius of Earth …
- Question 2
A large container of volume 85 m3 is filled with 110 kg of an ideal gas. The pressure of the gas is …
- Question 3
(a) A body undergoes simple harmonic motion. The variation with displacement x of its velocity v is shown in Fig. …
- Question 4
(a) (i) Explain why ultrasound used in medical diagnosis is emitted in pulses. (ii) Explain the principles of the detection of ultrasound waves used in medical diagnosis. (b) The specific acoustic impedances Z of some media are given in Table …
- Question 5
(a) State two advantages of the transmission of data in digital form, rather than analogue form. …
- Question 6
Two positively charged identical metal spheres A and B have their centres separated by a distance of 24 cm, as shown in Fig. 6.1. sphere A x sphere B 24 cm Fig. 6.1 (not to scale) The variation with distance …
- Question 7
(a) On Fig. 7.1, sketch the temperature characteristic of a negative temperature coefficient (n.t.c.) thermistor. Label the axes with quantity and unit. 0 0 Fig. 7.1 (b) An n.t.c. thermistor and a resistor are connected as shown in Fig. 7.2. …
- Question 8
(a) Explain what is meant by a magnetic field. (b) The apparatus shown in Fig. 8.1 is used in an experiment to find the magnetic flux density B between the poles of a horseshoe magnet. Assume the magnetic field is …
- Question 9
(a) The output of a power supply is represented by: …
- Question 10
(a) By reference to the photoelectric effect, explain what is meant by work function energy. (b) In an experiment, electromagnetic radiation of frequency f is incident on a metal surface. The results in Fig. 10.1 show the variation with frequency …
- Question 11
Electrons are accelerated through a potential difference of 100 kV. They are then incident on a metal target, they decelerate, and X-ray photons are emitted. (a) Calculate the maximum possible frequency of the emitted X-ray photons. frequency = Hz (b) …
- Question 12
(a) Explain what is meant by the binding energy of a nucleus. (b) The following nuclear reaction takes place: …