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Question 38

A timekeeper stands at the finish line of a 200 m running track. They start their stopwatch when they see the flash of the starter's pistol rather than when they hear the bang.

What is the reason for doing this?

A

Light travels much faster than sound.

B

There is a risk that the sound wave will be absorbed by the air.

C

Humans react slower to auditory cues than to visual cues.

D

The pistol releases the flash a fraction of a second before the sound is created.

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.

Question bank