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Question 89

An explorer stands at a distance d d\,d from a large vertical cliff face. He wants to determine the speed of sound in air by measuring the time interval between producing a sound and hearing its echo.

He uses the formula:

speed=distancetime \text{speed} = \frac{\text{distance}}{\text{time}} speed=timedistance​

Which type of sound should he make, and what represented distance must be used in the calculation?

A

Type of sound: Continuous, steady tone; Distance to use: d2\frac{d}{2}2d​

B

Type of sound: Continuous, steady tone; Distance to use: 2d2d2d

C

Type of sound: Short, sharp clap; Distance to use: d2\frac{d}{2}2d​

D

Type of sound: Short, sharp clap; Distance to use: 2d2d2d

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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