DP Physics (last assessment 2024)
Question 18M.2.HL.TZ1.b.ii
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.HL.TZ1.b.ii |
| Level | HL | Paper | 2 | Time zone | TZ1 |
| Command term | Deduce | Question number | b.ii | Adapted from | N/A |
b.ii.
[Maximum mark: 2]
18M.2.HL.TZ1.b.ii
A beam of coherent monochromatic light from a distant galaxy is used in an optics experiment on Earth.
The graph of variation of intensity with diffraction angle for this experiment is shown.
Deduce, in mm, the width of one slit.
[2]
Markscheme
use of diffraction formula «b = »
OR
«=» 7.5«00» × 10–2 «mm»
Allow ECF from (b)(i).
[2 marks]
