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4.3 Sound, ultrasound and infrasound (physics only)

4.3 Sound, ultrasound and infrasound (physics only)

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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 (physics only) Questions

  1. GCSE
  2. /Physics
  3. /4.3 Sound, ultrasound and infrasound (physics only)

35 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound (physics only). Each one has a worked solution and a mark scheme showing where the marks go.

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