DP Physics (last assessment 2024)
Question 20N.3.HL.TZ0.24a
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.3.HL.TZ0.24a |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | State | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
20N.3.HL.TZ0.24a
The cosmic microwave background (CMB) radiation is observed to have anisotropies.
(a)
State the nature of the anisotropies observed in the CMB radiation.
[1]
Markscheme
the temperature/«peak» wavelength/intensity «of the CMBR» varies «slightly» / is not constant in different directions ✓
Examiners report
This was not the best answered question in the Option. Candidates oscillated between correct identification of characteristics of the CMB radiation and more generic explanations about the Big Bang.
