2025

Cambridge A Level ยท 9702 ยท Paper 4 ยท A Level structured questions

Physics 9702/42 Oct/Nov 2025 past paper

Cambridge A Level Physics (9702) Paper 4 (A Level structured questions), variant 2, Oct/Nov 2025: the question paper and its official mark scheme, 10 questions worth 100 marks, with the grade thresholds. Free to open, no account needed.

Questions
10
Marks
100
Grade A from
57

File names: 9702_w25_qp_42 ยท 9702_w25_ms_42

Grade thresholds for 9702/42 Oct/Nov 2025

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.

ABCDE
5748392919

Topics in this paper

Which syllabus chapters 9702/42 Oct/Nov 2025 tested, by marks. Each chapter links to every past-paper question on it.

ChapterQuestionsMarks
Ideal gases220
Nuclear physics113
Electric fields111
Thermodynamics110
Oscillations110
Quantum physics110
Motion in a circle19
Medical physics19
Alternating currents18

Questions in 9702/42 Oct/Nov 2025

  1. Question 1Motion in a circle ยท 9 marks

    The Earth may be considered as a uniform sphere of radius โ€ฆ

  2. Question 2Ideal gases ยท 11 marks

    (a) State Newtonโ€™s law of gravitation. (b) One of the basic assumptions of the kinetic theory of gases is that there are no forces exerted between the molecules of the gas except during collisions. State two other basic assumptions of โ€ฆ

  3. Question 3Ideal gases ยท 9 marks

    (a) State what is meant by two objects being in thermal equilibrium. (b) Fig. 3.1 shows a type of thermometer called a constant volume gas thermometer. gas fixed glass tube glass bulb โ€ฆ

  4. Question 4Thermodynamics ยท 10 marks

    A cylinder contains a fixed mass of an ideal gas at pressure 2Y and volume 6X. The gas undergoes a sequence of changes from its initial state A, through states B, C and D, then finally back to its initial โ€ฆ

  5. Question 5Oscillations ยท 10 marks

    A steel ball on the end of a thin string oscillates with small oscillations, as shown in Fig. 5.1. thin string steel ball oscillations x equilibrium position Fig. 5.1 (not to scale) The displacement of the centre of the ball โ€ฆ

  6. Question 6Electric fields ยท 11 marks

    (a) Define electric field at a point. (b) An isolated conducting sphere in a vacuum has a capacitance of 69 pF. The charge on the sphere is +83 pC. (i) On Fig. 6.1, draw field lines to represent the electric โ€ฆ

  7. Question 7Alternating currents ยท 8 marks

    An alternating voltage V varies with time t according to โ€ฆ

  8. Question 8Quantum physics ยท 10 marks

    Fig. 8.1 shows the three lowest-frequency lines in the part of the emission spectrum for hydrogen that relates to electron transitions to the ground state (level โ€ฆ

  9. Question 9Nuclear physics ยท 13 marks

    (a) State what is meant by the mass defect of a nucleus. (b) The nuclear fusion reaction for the formation of helium-4 from deuterium is represented by โ€ฆ

  10. Question 10Medical physics ยท 9 marks

    (a) State what is meant by contrast in an X-ray image. (b) X-rays of intensity I0 are incident normally on a structure, as shown in Fig. โ€ฆ

Other Physics papers from Oct/Nov 2025

Questions students ask

Where can I get the 9702/42 Oct/Nov 2025 mark scheme?
Open the mark scheme above - it is the official Cambridge scheme for this exact paper (9702_w25_ms_42), and on a wide screen it sits beside the question you are reading.
What was the grade threshold for an A in 9702/42 Oct/Nov 2025?
57 marks out of 100, a C needed 39.
Which topics came up in 9702/42 Oct/Nov 2025?
Mostly Ideal gases, Nuclear physics, Electric fields. The full list is in the table above.
Do I need an account to open 9702/42 Oct/Nov 2025?
No. Every paper opens for free without signing in. A free account also saves your pen marks and records your score against the grade thresholds.