DP Physics (last assessment 2024)
Question 19M.3.SL.TZ1.a
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.SL.TZ1.a |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | State | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
19M.3.SL.TZ1.a
A rocket moving with speed v relative to the ground emits a flash of light in the backward direction.
An observer in the rocket measures the speed of the flash of light to be c.
State the speed of the flash of light according to an observer on the ground using Galilean relativity.
[1]
Markscheme
c–v ✔
Examiners report
The speed of a flash of light from different viewpoints. Most of the prepared candidates well stated the speed of the flash using Galilean relativity, Maxwell’s theory and Einstein’s theory.
