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4.3 Sound, ultrasound and infrasound

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Question 3

A sonar system on a submarine emits pressure waves into seawater to map the seabed. The speed of sound in seawater is 1500 m s-1.

What is the maximum wavelength of a sound wave in seawater that can be classified as ultrasound?

A

7.5 mm7.5\text{ mm}7.5 mm

B

1.7 cm1.7\text{ cm}1.7 cm

C

7.5 cm7.5\text{ cm}7.5 cm

D

75 m75\text{ m}75 m

Markscheme

4.3 Sound, ultrasound and infrasound Questions

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

35 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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