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4.3 Sound, ultrasound and infrasound

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Question 33
F

A sound wave has a frequency of 800 Hz in a liquid. It passes into air, where its speed is 320 m/s.

Which gives the number of complete vibrations in 0.25 s and the wavelength in air?

[1]
A

200200200 vibrations and 0.40 m0.40\ \mathrm{m}0.40 m

B

200200200 vibrations and 2.5 m2.5\ \mathrm{m}2.5 m

C

320032003200 vibrations and 0.40 m0.40\ \mathrm{m}0.40 m

D

320032003200 vibrations and 2.5 m2.5\ \mathrm{m}2.5 m

Markscheme

4.3 Sound, ultrasound and infrasound Questions

  1. GCSE
  2. /Physics
  3. /4.3 Sound, ultrasound and infrasound

112 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound, covering 4.3.1 Sound waves, vibrations and the human ear, 4.3.2 Ultrasound and infrasound, 4.3.3 Uses of ultrasound and infrasound, and 4.3.4 Sound waves passing between media. Each one has a worked solution and a mark scheme showing where the marks go.

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