Physics 9702 · 8 Superposition
8.4 The diffraction grating
Use the diffraction grating equation to determine the wavelength of light experimentally.
- Questions
- 72
- Years
- 2015–2026
- Multiple choice
- 54
- Written answer
- 18
- Average marks
- 3.1
Where this subtopic appears
- Paper 1variants 11, 12, 1354
- Paper 2variants 21, 22, 2315
- Paper 5variants 51, 52, 533
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 2 | 3 | – | 5 |
| 2023 | 1 | 3 | 4 | 8 |
| 2022 | 1 | 4 | 3 | 8 |
| 2021 | 1 | 4 | 3 | 8 |
| 2020 | 2 | 3 | 4 | 9 |
| 2019 | 1 | 4 | 5 | 10 |
| 2018 | – | 4 | 4 | 8 |
| 2017 | – | 4 | 1 | 5 |
| 2016 | 1 | 3 | 4 | 8 |
| 2015 | – | 1 | 2 | 3 |
