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Question 59

A student wants to determine the speed of sound in air by measuring the time delay of an echo from a tall, flat wall. She stands at a distance d d\,d from the wall and claps two wooden blocks together. She measures the time interval t t\,t between making the clap and hearing the reflected sound.

Which type of sound should she make, and which formula should she use to calculate the speed of sound, vvv?

A

Type of sound: a continuous whistle; Formula: v=dtv = \frac{d}{t}v=td​

B

Type of sound: a continuous whistle; Formula: v=2dtv = \frac{2d}{t}v=t2d​

C

Type of sound: a single sharp clap; Formula: v=2dtv = \frac{2d}{t}v=t2d​

D

Type of sound: a single sharp clap; Formula: v=d2tv = \frac{d}{2t}v=2td​

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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