Physics · May / June 2026 · Paper 12 · Question 28
5054Sound
A fishing boat emits a pulse of ultrasound. The pulse is reflected from some fish underneath the boat. The reflected pulse reaches the boat 0.32s after it is emitted. The speed of ultrasound in water is 1500m/s. What is the distance between the boat and the fish?
- A240m
- B480m
- C4700m
- D9400m
As printed in the paper
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Correct answer: A. 240m
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