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4.3 Sound, ultrasound and infrasound

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Question 47
H

A scanner receives an ultrasound echo from a tissue boundary 80 μs80\ \mu\mathrm{s}80 μs after sending a pulse. The speed of ultrasound in the tissue is 1540 m/s.

How far below the probe is the boundary?

[1]
A

12.32 cm12.32\ \mathrm{cm}12.32 cm

B

6.16 cm6.16\ \mathrm{cm}6.16 cm

C

3.08 cm3.08\ \mathrm{cm}3.08 cm

D

61.6 cm61.6\ \mathrm{cm}61.6 cm

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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