Question 39
Question 39 of 40
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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
11. Particle physics
11.1. Atoms, nuclei and radiation

infer from the results of the α-particle scattering experiment the existence and small size of the nucleus

22. Quantum physics
22.3. Wave-particle duality

describe and interpret qualitatively the evidence provided by electron diffraction for the wave nature of particles

11. Particle physics
11.2. Fundamental particles

describe the changes to quark composition that take place during β− and β+ decay