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Question 175

A spectator at an athletics event is standing 135 m away from the starting line. The starter fires a pistol, producing a puff of smoke and a loud sound. The spectator sees the smoke the instant it is produced. The speed of sound in air is 330 m/s.

What is the time delay between the spectator seeing the smoke and hearing the sound?

A

0.41 s0.41\text{ s}0.41 s

B

0.82 s0.82\text{ s}0.82 s

C

2.4 s2.4\text{ s}2.4 s

D

4.1 s4.1\text{ s}4.1 s

Markscheme

Sound Questions

  1. IGCSE
  2. /Physics
  3. /Sound

295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.

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