DP Physics (first assessment 2025)
Question EXE.2.HL.TZ0.18a
| Date | Example questions Example questions | Marks available | [Maximum mark: 2] | Reference code | EXE.2.HL.TZ0.18a |
| Level | HL | Paper | 2 | Time zone | TZ0 |
| Command term | Outline | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
EXE.2.HL.TZ0.18a
(a)
Outline why the pattern observed on the screen is an evidence for matter waves.
[2]
Markscheme
The pattern is formed when the electrons scattered from adjacent planes in the graphite crystal undergo interference / diffract ✓
Interference / diffraction is a property of waves only ✓
