Physics 9702 · 7 Waves
7.3 Doppler effect for sound waves
Explain the Doppler effect for sound and calculate observed frequency for a moving source.
- Questions
- 80
- Years
- 2016–2026
- Multiple choice
- 62
- Written answer
- 18
- Average marks
- 2.6
Where this subtopic appears
- Paper 1variants 11, 12, 13, 1462
- Paper 2variants 21, 22, 2318
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 1 | 4 | – | 5 |
| 2023 | 1 | 3 | 5 | 9 |
| 2022 | 2 | 3 | 3 | 8 |
| 2021 | 2 | 3 | 6 | 11 |
| 2020 | 2 | 3 | 3 | 8 |
| 2019 | 1 | 4 | 4 | 9 |
| 2018 | 1 | 4 | 3 | 8 |
| 2017 | 2 | 5 | 5 | 12 |
| 2016 | 2 | 3 | 5 | 10 |
