# 9702 P4 Topic Questions — CIE IAL Physics 9702 Paper 4

> CIE IAL Physics 9702 Paper 4: 44 topics with 602 9702 P4 topic questions from 12 papers (2025–2026). Browse questions by topic, then open the exact…

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CIE IAL · Physics · A Level

Practise 9702 P4 topic questions by topic. 44 topics from the 2025–2027 syllabus are drawn from 12 papers (2025–2026). Each topic below opens every past-paper question tagged to its syllabus points.

- 9702 P4
- 12 papers
- 602 topic questions
- 1,200 marks
- Syllabus 2025–2027
- [Browse 9702 P4 papers](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-4/)
- [All paper codes](https://www.examsci.com/topics/)

Core finding

**Simple harmonic oscillations leads 9702 P4 with 38 topic questions and 63 marks across 10 papers.** Kinetic theory of gases follows with 32 topic questions and 70 marks. The current 2025–2027 dataset covers 44 topics, 602 topic questions and 1,200 marks. Each MCQ or structured part counts as one item, and each topic counts only the parts tagged to it, so the ranking reflects exam exposure rather than the number of question stems. Rows also carry paper count, mark total and year range for cross-unit comparison. The native table reproduces every figure in curriculum order.

## Topic question count and mark distribution

Topics are on the vertical axis and sorted from highest to lowest. Only the parts whose knowledge graph matches a topic are counted for that topic, and percentages are each row's share of the tagged total in that chart. A part tagged to several topics is counted in each bar, so the bars are not a partition of the unit total.

### Questions by topic

question items

- [Simple harmonic oscillations](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/simple-harmonic-oscillations/) (10 papers) — 38 · 5.7%
- [Kinetic theory of gases](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinetic-theory-of-gases/) (12 papers) — 32 · 4.8%
- [Rectification and smoothing](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/rectification-and-smoothing/) (9 papers) — 28 · 4.2%
- [Electric potential](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-potential/) (9 papers) — 26 · 3.9%
- [Centripetal acceleration](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/centripetal-acceleration/) (10 papers) — 25 · 3.8%
- [The first law of thermodynamics](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-first-law-of-thermodynamics/) (10 papers) — 23 · 3.5%
- [Force on a moving charge](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-moving-charge/) (5 papers) — 22 · 3.3%
- [Characteristics of alternating currents](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/characteristics-of-alternating-currents/) (9 papers) — 21 · 3.2%
- [Internal energy](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/internal-energy/) (11 papers) — 21 · 3.2%
- [Equation of state](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/equation-of-state/) (9 papers) — 20 · 3.0%
- [Mass defect and nuclear binding energy](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/mass-defect-and-nuclear-binding-energy/) (9 papers) — 20 · 3.0%
- [Specific heat capacity and specific latent heat](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/specific-heat-capacity-and-specific-latent-heat/) (7 papers) — 20 · 3.0%
- [Kinematics of uniform circular motion](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinematics-of-uniform-circular-motion/) (8 papers) — 19 · 2.9%
- [Radioactive decay](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/radioactive-decay/) (6 papers) — 19 · 2.9%
- [Electromagnetic induction](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electromagnetic-induction/) (5 papers) — 18 · 2.7%
- [Gravitational potential](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-potential/) (6 papers) — 18 · 2.7%
- [Production and use of X-rays](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-x-rays/) (4 papers) — 18 · 2.7%
- [Capacitors and capacitance](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/capacitors-and-capacitance/) (8 papers) — 17 · 2.6%
- [Discharging a capacitor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/discharging-a-capacitor/) (7 papers) — 16 · 2.4%
- [PET scanning](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/pet-scanning/) (3 papers) — 16 · 2.4%
- [Stellar radii](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/stellar-radii/) (9 papers) — 16 · 2.4%
- [Production and use of ultrasound](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-ultrasound/) (4 papers) — 15 · 2.3%
- [Energy and momentum of a photon](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-and-momentum-of-a-photon/) (8 papers) — 13 · 2.0%
- [Gravitational field](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field/) (6 papers) — 13 · 2.0%
- [Gravitational field of a point mass](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field-of-a-point-mass/) (6 papers) — 13 · 2.0%
- [Gravitational force between point masses](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-force-between-point-masses/) (5 papers) — 13 · 2.0%
- [Hubble’s law and the Big Bang theory](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/hubble-s-law-and-the-big-bang-theory/) (6 papers) — 13 · 2.0%
- [Temperature scales](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/temperature-scales/) (6 papers) — 13 · 2.0%
- [Wave-particle duality](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/wave-particle-duality/) (5 papers) — 13 · 2.0%
- [Electric force between point charges](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-force-between-point-charges/) (5 papers) — 12 · 1.8%
- [Photoelectric effect](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/photoelectric-effect/) (3 papers) — 12 · 1.8%
- [Standard candles](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/standard-candles/) (8 papers) — 11 · 1.7%
- [Force on a current-carrying conductor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-current-carrying-conductor/) (8 papers) — 10 · 1.5%
- [Energy in simple harmonic motion](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-in-simple-harmonic-motion/) (4 papers) — 9 · 1.4%
- [Electric field of a point charge](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-field-of-a-point-charge/) (7 papers) — 8 · 1.2%
- [Energy stored in a capacitor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-stored-in-a-capacitor/) (5 papers) — 8 · 1.2%
- [Damped and forced oscillations, resonance](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/damped-and-forced-oscillations-resonance/) (3 papers) — 7 · 1.1%
- [Electric fields and field lines](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-fields-and-field-lines/) (6 papers) — 7 · 1.1%
- [The mole](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-mole/) (6 papers) — 7 · 1.1%
- [Magnetic fields due to currents](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/magnetic-fields-due-to-currents/) (3 papers) — 4 · 0.6%
- [Thermal equilibrium](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/thermal-equilibrium/) (3 papers) — 4 · 0.6%
- [Concept of a magnetic field](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/concept-of-a-magnetic-field/) (1 papers) — 3 · 0.5%
- [Energy levels in atoms and line spectra](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-levels-in-atoms-and-line-spectra/) (1 papers) — 3 · 0.5%
- [Uniform electric fields](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/uniform-electric-fields/) (1 papers) — 2 · 0.3%

### Marks by topic

marks

- [Kinetic theory of gases](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinetic-theory-of-gases/) (12 papers) — 70 · 5.1%
- [Simple harmonic oscillations](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/simple-harmonic-oscillations/) (10 papers) — 63 · 4.6%
- [Electric potential](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-potential/) (9 papers) — 53 · 3.9%
- [The first law of thermodynamics](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-first-law-of-thermodynamics/) (10 papers) — 53 · 3.9%
- [Mass defect and nuclear binding energy](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/mass-defect-and-nuclear-binding-energy/) (9 papers) — 51 · 3.7%
- [Rectification and smoothing](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/rectification-and-smoothing/) (9 papers) — 51 · 3.7%
- [Centripetal acceleration](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/centripetal-acceleration/) (10 papers) — 49 · 3.6%
- [Internal energy](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/internal-energy/) (11 papers) — 47 · 3.4%
- [Specific heat capacity and specific latent heat](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/specific-heat-capacity-and-specific-latent-heat/) (7 papers) — 46 · 3.4%
- [Capacitors and capacitance](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/capacitors-and-capacitance/) (8 papers) — 43 · 3.1%
- [Electromagnetic induction](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electromagnetic-induction/) (5 papers) — 42 · 3.1%
- [Characteristics of alternating currents](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/characteristics-of-alternating-currents/) (9 papers) — 41 · 3.0%
- [Force on a moving charge](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-moving-charge/) (5 papers) — 40 · 2.9%
- [Radioactive decay](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/radioactive-decay/) (6 papers) — 40 · 2.9%
- [Equation of state](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/equation-of-state/) (9 papers) — 37 · 2.7%
- [Production and use of X-rays](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-x-rays/) (4 papers) — 37 · 2.7%
- [Discharging a capacitor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/discharging-a-capacitor/) (7 papers) — 36 · 2.6%
- [Gravitational potential](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-potential/) (6 papers) — 36 · 2.6%
- [Kinematics of uniform circular motion](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinematics-of-uniform-circular-motion/) (8 papers) — 33 · 2.4%
- [Production and use of ultrasound](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-ultrasound/) (4 papers) — 33 · 2.4%
- [Stellar radii](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/stellar-radii/) (9 papers) — 30 · 2.2%
- [Energy and momentum of a photon](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-and-momentum-of-a-photon/) (8 papers) — 29 · 2.1%
- [Standard candles](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/standard-candles/) (8 papers) — 29 · 2.1%
- [Gravitational field of a point mass](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field-of-a-point-mass/) (6 papers) — 28 · 2.0%
- [Hubble’s law and the Big Bang theory](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/hubble-s-law-and-the-big-bang-theory/) (6 papers) — 27 · 2.0%
- [PET scanning](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/pet-scanning/) (3 papers) — 27 · 2.0%
- [Photoelectric effect](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/photoelectric-effect/) (3 papers) — 27 · 2.0%
- [Wave-particle duality](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/wave-particle-duality/) (5 papers) — 27 · 2.0%
- [Energy in simple harmonic motion](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-in-simple-harmonic-motion/) (4 papers) — 25 · 1.8%
- [Gravitational force between point masses](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-force-between-point-masses/) (5 papers) — 25 · 1.8%
- [Force on a current-carrying conductor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-current-carrying-conductor/) (8 papers) — 24 · 1.8%
- [Gravitational field](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field/) (6 papers) — 21 · 1.5%
- [Energy stored in a capacitor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-stored-in-a-capacitor/) (5 papers) — 20 · 1.5%
- [Electric field of a point charge](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-field-of-a-point-charge/) (7 papers) — 19 · 1.4%
- [Electric force between point charges](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-force-between-point-charges/) (5 papers) — 18 · 1.3%
- [Temperature scales](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/temperature-scales/) (6 papers) — 17 · 1.2%
- [Damped and forced oscillations, resonance](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/damped-and-forced-oscillations-resonance/) (3 papers) — 14 · 1.0%
- [Electric fields and field lines](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-fields-and-field-lines/) (6 papers) — 13 · 1.0%
- [The mole](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-mole/) (6 papers) — 13 · 1.0%
- [Energy levels in atoms and line spectra](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-levels-in-atoms-and-line-spectra/) (1 papers) — 9 · 0.7%
- [Magnetic fields due to currents](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/magnetic-fields-due-to-currents/) (3 papers) — 8 · 0.6%
- [Thermal equilibrium](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/thermal-equilibrium/) (3 papers) — 8 · 0.6%
- [Concept of a magnetic field](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/concept-of-a-magnetic-field/) (1 papers) — 6 · 0.4%
- [Uniform electric fields](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/uniform-electric-fields/) (1 papers) — 3 · 0.2%

## Topic comparison matrix

Curriculum order is by syllabus number, then alphabetically. Every topic links to its subtopic index.

| Topic | Subtopics | Topic questions | Papers | Marks | Years | |
| --- | --- | --- | --- | --- | --- | --- |
| **[Capacitors and capacitance](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/capacitors-and-capacitance/)** | 4 | 17 | 8 | 43 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/capacitors-and-capacitance/) |
| **[Centripetal acceleration](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/centripetal-acceleration/)** | 4 | 25 | 10 | 49 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/centripetal-acceleration/) |
| **[Characteristics of alternating currents](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/characteristics-of-alternating-currents/)** | 4 | 21 | 9 | 41 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/characteristics-of-alternating-currents/) |
| **[Concept of a magnetic field](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/concept-of-a-magnetic-field/)** | 1 | 3 | 1 | 6 | 2025 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/concept-of-a-magnetic-field/) |
| **[Damped and forced oscillations, resonance](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/damped-and-forced-oscillations-resonance/)** | 3 | 7 | 3 | 14 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/damped-and-forced-oscillations-resonance/) |
| **[Discharging a capacitor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/discharging-a-capacitor/)** | 3 | 16 | 7 | 36 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/discharging-a-capacitor/) |
| **[Electric field of a point charge](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-field-of-a-point-charge/)** | 1 | 8 | 7 | 19 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-field-of-a-point-charge/) |
| **[Electric fields and field lines](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-fields-and-field-lines/)** | 3 | 7 | 6 | 13 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-fields-and-field-lines/) |
| **[Electric force between point charges](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-force-between-point-charges/)** | 1 | 12 | 5 | 18 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-force-between-point-charges/) |
| **[Electric potential](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-potential/)** | 3 | 26 | 9 | 53 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-potential/) |
| **[Electromagnetic induction](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electromagnetic-induction/)** | 5 | 18 | 5 | 42 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electromagnetic-induction/) |
| **[Energy and momentum of a photon](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-and-momentum-of-a-photon/)** | 3 | 13 | 8 | 29 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-and-momentum-of-a-photon/) |
| **[Energy in simple harmonic motion](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-in-simple-harmonic-motion/)** | 2 | 9 | 4 | 25 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-in-simple-harmonic-motion/) |
| **[Energy levels in atoms and line spectra](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-levels-in-atoms-and-line-spectra/)** | 3 | 3 | 1 | 9 | 2025 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-levels-in-atoms-and-line-spectra/) |
| **[Energy stored in a capacitor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-stored-in-a-capacitor/)** | 1 | 8 | 5 | 20 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-stored-in-a-capacitor/) |
| **[Equation of state](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/equation-of-state/)** | 3 | 20 | 9 | 37 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/equation-of-state/) |
| **[Force on a current-carrying conductor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-current-carrying-conductor/)** | 3 | 10 | 8 | 24 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-current-carrying-conductor/) |
| **[Force on a moving charge](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-moving-charge/)** | 5 | 22 | 5 | 40 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-moving-charge/) |
| **[Gravitational field](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field/)** | 2 | 13 | 6 | 21 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field/) |
| **[Gravitational field of a point mass](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field-of-a-point-mass/)** | 3 | 13 | 6 | 28 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field-of-a-point-mass/) |
| **[Gravitational force between point masses](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-force-between-point-masses/)** | 3 | 13 | 5 | 25 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-force-between-point-masses/) |
| **[Gravitational potential](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-potential/)** | 3 | 18 | 6 | 36 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-potential/) |
| **[Hubble’s law and the Big Bang theory](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/hubble-s-law-and-the-big-bang-theory/)** | 4 | 13 | 6 | 27 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/hubble-s-law-and-the-big-bang-theory/) |
| **[Internal energy](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/internal-energy/)** | 2 | 21 | 11 | 47 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/internal-energy/) |
| **[Kinematics of uniform circular motion](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinematics-of-uniform-circular-motion/)** | 3 | 19 | 8 | 33 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinematics-of-uniform-circular-motion/) |
| **[Kinetic theory of gases](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinetic-theory-of-gases/)** | 4 | 32 | 12 | 70 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinetic-theory-of-gases/) |
| **[Magnetic fields due to currents](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/magnetic-fields-due-to-currents/)** | 2 | 4 | 3 | 8 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/magnetic-fields-due-to-currents/) |
| **[Mass defect and nuclear binding energy](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/mass-defect-and-nuclear-binding-energy/)** | 6 | 20 | 9 | 51 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/mass-defect-and-nuclear-binding-energy/) |
| **[PET scanning](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/pet-scanning/)** | 6 | 16 | 3 | 27 | 2025 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/pet-scanning/) |
| **[Photoelectric effect](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/photoelectric-effect/)** | 4 | 12 | 3 | 27 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/photoelectric-effect/) |
| **[Production and use of ultrasound](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-ultrasound/)** | 5 | 15 | 4 | 33 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-ultrasound/) |
| **[Production and use of X-rays](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-x-rays/)** | 4 | 18 | 4 | 37 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-x-rays/) |
| **[Radioactive decay](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/radioactive-decay/)** | 6 | 19 | 6 | 40 | 2025 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/radioactive-decay/) |
| **[Rectification and smoothing](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/rectification-and-smoothing/)** | 4 | 28 | 9 | 51 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/rectification-and-smoothing/) |
| **[Simple harmonic oscillations](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/simple-harmonic-oscillations/)** | 5 | 38 | 10 | 63 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/simple-harmonic-oscillations/) |
| **[Specific heat capacity and specific latent heat](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/specific-heat-capacity-and-specific-latent-heat/)** | 2 | 20 | 7 | 46 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/specific-heat-capacity-and-specific-latent-heat/) |
| **[Standard candles](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/standard-candles/)** | 4 | 11 | 8 | 29 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/standard-candles/) |
| **[Stellar radii](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/stellar-radii/)** | 3 | 16 | 9 | 30 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/stellar-radii/) |
| **[Temperature scales](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/temperature-scales/)** | 4 | 13 | 6 | 17 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/temperature-scales/) |
| **[The first law of thermodynamics](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-first-law-of-thermodynamics/)** | 2 | 23 | 10 | 53 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-first-law-of-thermodynamics/) |
| **[The mole](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-mole/)** | 1 | 7 | 6 | 13 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-mole/) |
| **[Thermal equilibrium](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/thermal-equilibrium/)** | 2 | 4 | 3 | 8 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/thermal-equilibrium/) |
| **[Uniform electric fields](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/uniform-electric-fields/)** | 2 | 2 | 1 | 3 | 2025 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/uniform-electric-fields/) |
| **[Wave-particle duality](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/wave-particle-duality/)** | 4 | 13 | 5 | 27 | 2025–2026 | [Open topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/wave-particle-duality/) |

## Browse all topic questions

- [Capacitors and capacitance](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/capacitors-and-capacitance/) — 17 question items · 8 papers — 4 subtopics · 43 marks · 2025–2026
- [Centripetal acceleration](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/centripetal-acceleration/) — 25 question items · 10 papers — 4 subtopics · 49 marks · 2025–2026
- [Characteristics of alternating currents](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/characteristics-of-alternating-currents/) — 21 question items · 9 papers — 4 subtopics · 41 marks · 2025–2026
- [Concept of a magnetic field](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/concept-of-a-magnetic-field/) — 3 question items · 1 papers — 1 subtopics · 6 marks · 2025
- [Damped and forced oscillations, resonance](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/damped-and-forced-oscillations-resonance/) — 7 question items · 3 papers — 3 subtopics · 14 marks · 2025–2026
- [Discharging a capacitor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/discharging-a-capacitor/) — 16 question items · 7 papers — 3 subtopics · 36 marks · 2025–2026
- [Electric field of a point charge](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-field-of-a-point-charge/) — 8 question items · 7 papers — 1 subtopics · 19 marks · 2025–2026
- [Electric fields and field lines](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-fields-and-field-lines/) — 7 question items · 6 papers — 3 subtopics · 13 marks · 2025–2026
- [Electric force between point charges](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-force-between-point-charges/) — 12 question items · 5 papers — 1 subtopics · 18 marks · 2025–2026
- [Electric potential](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electric-potential/) — 26 question items · 9 papers — 3 subtopics · 53 marks · 2025–2026
- [Electromagnetic induction](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/electromagnetic-induction/) — 18 question items · 5 papers — 5 subtopics · 42 marks · 2025–2026
- [Energy and momentum of a photon](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-and-momentum-of-a-photon/) — 13 question items · 8 papers — 3 subtopics · 29 marks · 2025–2026
- [Energy in simple harmonic motion](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-in-simple-harmonic-motion/) — 9 question items · 4 papers — 2 subtopics · 25 marks · 2025–2026
- [Energy levels in atoms and line spectra](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-levels-in-atoms-and-line-spectra/) — 3 question items · 1 papers — 3 subtopics · 9 marks · 2025
- [Energy stored in a capacitor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/energy-stored-in-a-capacitor/) — 8 question items · 5 papers — 1 subtopics · 20 marks · 2025–2026
- [Equation of state](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/equation-of-state/) — 20 question items · 9 papers — 3 subtopics · 37 marks · 2025–2026
- [Force on a current-carrying conductor](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-current-carrying-conductor/) — 10 question items · 8 papers — 3 subtopics · 24 marks · 2025–2026
- [Force on a moving charge](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/force-on-a-moving-charge/) — 22 question items · 5 papers — 5 subtopics · 40 marks · 2025–2026
- [Gravitational field](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field/) — 13 question items · 6 papers — 2 subtopics · 21 marks · 2025–2026
- [Gravitational field of a point mass](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-field-of-a-point-mass/) — 13 question items · 6 papers — 3 subtopics · 28 marks · 2025–2026
- [Gravitational force between point masses](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-force-between-point-masses/) — 13 question items · 5 papers — 3 subtopics · 25 marks · 2025–2026
- [Gravitational potential](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/gravitational-potential/) — 18 question items · 6 papers — 3 subtopics · 36 marks · 2025–2026
- [Hubble’s law and the Big Bang theory](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/hubble-s-law-and-the-big-bang-theory/) — 13 question items · 6 papers — 4 subtopics · 27 marks · 2025–2026
- [Internal energy](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/internal-energy/) — 21 question items · 11 papers — 2 subtopics · 47 marks · 2025–2026
- [Kinematics of uniform circular motion](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinematics-of-uniform-circular-motion/) — 19 question items · 8 papers — 3 subtopics · 33 marks · 2025–2026
- [Kinetic theory of gases](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/kinetic-theory-of-gases/) — 32 question items · 12 papers — 4 subtopics · 70 marks · 2025–2026
- [Magnetic fields due to currents](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/magnetic-fields-due-to-currents/) — 4 question items · 3 papers — 2 subtopics · 8 marks · 2025–2026
- [Mass defect and nuclear binding energy](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/mass-defect-and-nuclear-binding-energy/) — 20 question items · 9 papers — 6 subtopics · 51 marks · 2025–2026
- [PET scanning](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/pet-scanning/) — 16 question items · 3 papers — 6 subtopics · 27 marks · 2025
- [Photoelectric effect](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/photoelectric-effect/) — 12 question items · 3 papers — 4 subtopics · 27 marks · 2025–2026
- [Production and use of ultrasound](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-ultrasound/) — 15 question items · 4 papers — 5 subtopics · 33 marks · 2025–2026
- [Production and use of X-rays](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/production-and-use-of-x-rays/) — 18 question items · 4 papers — 4 subtopics · 37 marks · 2025–2026
- [Radioactive decay](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/radioactive-decay/) — 19 question items · 6 papers — 6 subtopics · 40 marks · 2025
- [Rectification and smoothing](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/rectification-and-smoothing/) — 28 question items · 9 papers — 4 subtopics · 51 marks · 2025–2026
- [Simple harmonic oscillations](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/simple-harmonic-oscillations/) — 38 question items · 10 papers — 5 subtopics · 63 marks · 2025–2026
- [Specific heat capacity and specific latent heat](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/specific-heat-capacity-and-specific-latent-heat/) — 20 question items · 7 papers — 2 subtopics · 46 marks · 2025–2026
- [Standard candles](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/standard-candles/) — 11 question items · 8 papers — 4 subtopics · 29 marks · 2025–2026
- [Stellar radii](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/stellar-radii/) — 16 question items · 9 papers — 3 subtopics · 30 marks · 2025–2026
- [Temperature scales](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/temperature-scales/) — 13 question items · 6 papers — 4 subtopics · 17 marks · 2025–2026
- [The first law of thermodynamics](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-first-law-of-thermodynamics/) — 23 question items · 10 papers — 2 subtopics · 53 marks · 2025–2026
- [The mole](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/the-mole/) — 7 question items · 6 papers — 1 subtopics · 13 marks · 2025–2026
- [Thermal equilibrium](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/thermal-equilibrium/) — 4 question items · 3 papers — 2 subtopics · 8 marks · 2025–2026
- [Uniform electric fields](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/uniform-electric-fields/) — 2 question items · 1 papers — 2 subtopics · 3 marks · 2025
- [Wave-particle duality](https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/wave-particle-duality/) — 13 question items · 5 papers — 4 subtopics · 27 marks · 2025–2026

## Other Physics paper codes

- [9702 P1 480 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-1/)
- [9702 P2 354 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-2/)
- [9702 P3 386 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-3/)
- [9702 P5 116 question items](https://www.examsci.com/topics/cie-ial/physics/9702-paper-5/)

## Topic questions: rules and edge cases

**Where can I find 9702 P4 topic questions?**

This page groups every 9702 P4 topic question by topic and syllabus point. Open a topic to see the question numbers, marks and the session each one comes from, then follow the link into the original paper.

**How many topics are in the current 9702 P4 syllabus?**

This page lists 44 topics tagged to the current syllabus across 12 9702 P4 papers (2025–2026). Topics are ordered by syllabus number, then alphabetically.

**How are question counts and marks calculated?**

Each MCQ counts as one question item and each structured part counts as one item. Marks come from the official part marks. Only parts whose knowledge graph matches a topic are counted, and a part tagged to more than one topic is counted against each topic, so topic rows describe exam exposure rather than a partition of the paper.

**Why is there no topic chart on the D1 index?**

The D1 index intentionally stops at the paper-code level. Topic names are only shown after a code is selected, which prevents two units from claiming the same topic phrase or URL.

**Which sessions are included?**

All sessions tagged to the current syllabus are included, covering 2025–2026. Questions without a recognised syllabus tag are treated as current so they do not disappear from the index.

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Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/cie-ial/physics/9702-paper-4/