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Question 70

An audio technician is testing a loudspeaker that emits acoustic waves at four different frequencies:

  • Sound 1: 8 Hz
  • Sound 2: 18 Hz
  • Sound 3: 15 kHz15\text{ kHz}15 kHz
  • Sound 4: 22 kHz22\text{ kHz}22 kHz

An observer with typical human hearing can only hear one of these frequencies. Which sound is the observer able to hear?

A

Sound 1

B

Sound 2

C

Sound 3

D

Sound 4

Markscheme

Sound Questions

  1. IGCSE
  2. /Physics
  3. /Sound

295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.

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