Cambridge A Level ยท 9702 ยท Paper 4 ยท A Level structured questions
Physics 9702/42 Feb/March 2026 past paper
Cambridge A Level Physics (9702) Paper 4 (A Level structured questions), variant 2, Feb/March 2026: the question paper and its official mark scheme, 10 questions worth 100 marks. Free to open, no account needed.
- Questions
- 10
- Marks
- 100
File names: 9702_m26_qp_42 ยท 9702_m26_ms_42
Topics in this paper
Which syllabus chapters 9702/42 Feb/March 2026 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Electric fields | 1 | 12 |
| Nuclear physics | 1 | 12 |
| Oscillations | 1 | 11 |
| Medical physics | 1 | 11 |
| Motion in a circle | 1 | 10 |
| Alternating currents | 1 | 10 |
| Quantum physics | 1 | 10 |
| Thermodynamics | 1 | 9 |
| Temperature | 1 | 8 |
| Ideal gases | 1 | 7 |
Questions in 9702/42 Feb/March 2026
- Question 1
(a) Define the radian. (b) Three children are playing on a roundabout (rotatable horizontal platform) at a playground. Child X is standing on the edge of the roundabout. This child is pushing so that the edge of the roundabout moves โฆ
- Question 2
(a) Define electric field at a point. (b) An oil droplet has charge of magnitude Q. The droplet is held in equilibrium by the electric field between two horizontal parallel plates, as shown in Figure โฆ
- Question 3
(a) Define specific latent heat of fusion. (b) Explain why substances usually have a higher specific latent heat for vaporisation than for fusion. (c) An ice cube of mass 15.6 g at a temperature of โ18 ยฐC is removed from โฆ
- Question 4
The first law of thermodynamics may be written as โฆ
- Question 5
(a) State what is represented by the Avogadro constant. (b) A gas is in a sealed container that has a fixed volume. The thermodynamic temperature T of the gas is varied. Figure 5.1 shows how the pressure p of the โฆ
- Question 6
(a) State what is meant by simple harmonic motion. (b) A length of thick copper wire is formed into a rectangular frame, as shown in Figure โฆ
- Question 7
(a) State what is meant by the root-mean-square (r.m.s.) value of an alternating current. (b) There is a sinusoidal alternating current in a resistor of resistance 26 ฮฉ. The power P dissipated in the resistor varies with time t as โฆ
- Question 8
A star in a distant galaxy consists mostly of hydrogen. Visible light emitted by the star consists of discrete spectral absorption lines, as represented in Figure โฆ
- Question 9
(a) State what is meant by radioactive decay. (b) An isotope X is radioactive and decays to a stable product with a half-life of 12.0 minutes. A sample of X has an activity of โฆ
- Question 10
(a) (i) Explain how ultrasound waves are detected by a piezoelectric transducer. (ii) Define the specific acoustic impedance of a medium. (b) Table 10.1 lists the specific acoustic impedances Z of air, water and glass. Table 10.1 medium Z / โฆ