DP Physics (first assessment 2025)
Question EXE.1A.HL.TZ0.12
Date | Example questions Example questions | Marks available | [Maximum mark: 1] | Reference code | EXE.1A.HL.TZ0.12 |
Level | HL | Paper | 1A | Time zone | TZ0 |
Command term | Question number | 12 | Adapted from | N/A |
12.
[Maximum mark: 1]
EXE.1A.HL.TZ0.12
The spacetime diagram shows coordinate axes of reference frames of Earth (x, ct) and of a spaceship (x', ct'). Three events P, Q and R are plotted.
Which statement is correct about the order of the events according to an observer on the spaceship?
A. P and Q are simultaneous, R happens later.
B. Q and R are simultaneous, P happens earlier.
C. Q and R are simultaneous, P happens later.
D. P and R are simultaneous, Q happens earlier.
[1]
Markscheme
D