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Physics of the ear (A-level only)

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Question 13

An outdoor festival venue is filled with spectators. The peak sound-intensity level at the mixing desk is 102 dB102\text{ dB}102 dB.

a.

Estimate the peak sound-intensity level at the mixing desk when the number of spectators in the venue is reduced by 75%75\%75%.

You should assume that on both occasions:

  • the sound intensity produced by each spectator is the same
  • the spectators are distributed evenly around the venue.
[4]
b.

Describe two changes to a person's hearing that may result from prolonged exposure to sound at 102 dB102\text{ dB}102 dB without hearing protection.

[2]
Markscheme

Physics of the ear (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Physics of the ear (A-level only)

14 exam-style questions on AQA A Level Physics Physics of the ear (A-level only), covering Ear as a sound detection system (A-level only), Sensitivity and frequency response (A-level only), and Defects of hearing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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