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4.3 Sound, ultrasound and infrasound

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Question 4

A probe vibrating at 900 Hz sends sound through the air and into an acrylic block. In the acrylic, the wavelength of the sound is 3.0 m.

What is the speed of the sound in the acrylic?

[1]
A

300 m/s300\ \mathrm{m/s}300 m/s

B

900 m/s900\ \mathrm{m/s}900 m/s

C

2700 m/s2700\ \mathrm{m/s}2700 m/s

D

0.0033 m/s0.0033\ \mathrm{m/s}0.0033 m/s

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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