What this tests
Syllabus point 5.1 — The nuclear model of the atom, in Nuclear physics. Difficulty medium (estimated from the question's demands, not a Cambridge rating).
Also set in
The same question, as Cambridge printed it in other papers.
Cambridge IGCSE Physics 0625 · 5.1 The nuclear model of the atom
June 2018 · Paper 21 · Question 37
One real Cambridge question from Nuclear physics, with the official answer. Cambridge has printed this question 6 times.