Question 1
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
22. Quantum physics
22.1. Energy and momentum of a phot...

use the electronvolt (eV) as a unit of energy

11. Particle physics
11.1. Atoms, nuclei and radiation

use the unified atomic mass unit (u) as a unit of mass

3. Dynamics
3.1. Momentum and Newton’s laws of...

define and use force as rate of change of momentum