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4.3 Sound, ultrasound and infrasound

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Question 29

During an ultrasound check of a steel component, echoes from two internal boundaries return after 20 μs20\ \mu\mathrm{s}20 μs and 44 μs44\ \mu\mathrm{s}44 μs. The speed of ultrasound in the steel is 5900 m/s. What is the distance between the boundaries?

[1]
A

35.4 mm35.4\ \mathrm{mm}35.4 mm

B

70.8 mm70.8\ \mathrm{mm}70.8 mm

C

141.6 mm141.6\ \mathrm{mm}141.6 mm

D

129.8 mm129.8\ \mathrm{mm}129.8 mm

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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