Physics 9702 · 8 Superposition
8.3 Interference
Understand coherence and interference, and apply the double-slit formula to calculate wavelength.
- Questions
- 128
- Years
- 2015–2026
- Multiple choice
- 89
- Written answer
- 39
- Average marks
- 3.6
Where this subtopic appears
- Paper 1variants 11, 12, 13, 1489
- Paper 2variants 21, 22, 23, 2436
- Paper 5variants 522
- Paper 3variants 321
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 1 | 8 | – | 9 |
| 2025 | – | – | 1 | 1 |
| 2023 | 2 | 6 | 5 | 13 |
| 2022 | 2 | 5 | 5 | 12 |
| 2021 | 3 | 7 | 4 | 14 |
| 2020 | 1 | 7 | 6 | 14 |
| 2019 | 2 | 8 | 6 | 16 |
| 2018 | 3 | 8 | 4 | 15 |
| 2017 | 1 | 5 | 5 | 11 |
| 2016 | 1 | 6 | 3 | 10 |
| 2015 | – | 7 | 6 | 13 |
