Physics 9702 · 22 Quantum physics
22.2 Photoelectric effect
Explain photoelectric emission, define work function and threshold frequency, and apply Einstein's equation.
- Questions
- 27
- Years
- 2015–2026
- Multiple choice
- 0
- Written answer
- 27
- Average marks
- 9.3
Where this subtopic appears
- Paper 4variants 41, 42, 43, 4427
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 1 | – | 1 |
| 2023 | – | – | 1 | 1 |
| 2022 | – | 2 | 2 | 4 |
| 2021 | – | 1 | 1 | 2 |
| 2020 | 1 | – | 1 | 2 |
| 2019 | – | 2 | 2 | 4 |
| 2018 | – | 3 | 1 | 4 |
| 2017 | – | 1 | 1 | 2 |
| 2016 | 1 | – | 3 | 4 |
| 2015 | – | – | 3 | 3 |
