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Question 84

A bat emits a brief ultrasound pulse. An echo returns from an insect 0.040 s later. The insect is 6.8 m away from the bat.

What is the speed of the ultrasound wave in air?

A

0.17 m/s0.17\text{ m/s}0.17 m/s

B

0.34 m/s0.34\text{ m/s}0.34 m/s

C

170 m/s170\text{ m/s}170 m/s

D

340 m/s340\text{ m/s}340 m/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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