DP Physics (first assessment 2025)
Question 21M.2.HL.TZ1.10a
| Date | May 2021 | Marks available | [Maximum mark: 2] | Reference code | 21M.2.HL.TZ1.10a |
| Level | HL | Paper | 2 | Time zone | TZ1 |
| Command term | Describe | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
21M.2.HL.TZ1.10a
(a)
Describe the photoelectric effect.
[2]
Markscheme
electrons are ejected from the surface of a metal ✓
after gaining energy from photons/electromagnetic radiation ✓
there is a minimum «threshold» energy/frequency
OR
maximum «threshold» wavelength ✓
