What this tests
Syllabus point 3.1 — General properties of waves, in Waves. 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 · 3.1 General properties of waves
June 2004 · Paper 01 · Question 21
One real Cambridge question from Waves, with the official answer. Cambridge has printed this question 5 times.