DP Physics (last assessment 2024)
Question 18N.3.HL.TZ0.19a
| Date | November 2018 | Marks available | [Maximum mark: 2] | Reference code | 18N.3.HL.TZ0.19a |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Outline | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
18N.3.HL.TZ0.19a
The graph shows the variation with distance from the Earth of the recessional velocities of distant galaxies.
(a)
Outline how Hubble measured the recessional velocities of galaxies.
[2]
Markscheme
measured redshift «z» of star ✔
use of Doppler formula OR z∼v/c OR v = to find v ✔
OWTTE
