Physics (AS & A Level) · Feb / March 2025 · Paper 12 · Question 24

The diagram shows a car travelling at a constant speed in a straight line between person P and person Q from point X to point Y. The car sounds its horn continuously as it travels. The horn emits sound of constant frequency. Which statements about what person P and person Q hear during the motion of the car are correct? 1 Person P hears a sound of increasing frequency. 2 Person Q hears a sound of decreasing frequency. 3 Person Q always hears a sound of higher frequency than person P.

1. A1, 2 and 3
2. B1 and 2 only
3. C3 only
4. Dnone of them

As printed in the paper