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Question 92

Which row correctly describes the frequency range and the wave type of ultrasound and infrasound in air?

A

Ultrasound: frequency >20 kHz> 20\text{ kHz}>20 kHz, longitudinal wave; Infrasound: frequency <20 Hz< 20\text{ Hz}<20 Hz, longitudinal wave

B

Ultrasound: frequency >20 kHz> 20\text{ kHz}>20 kHz, transverse wave; Infrasound: frequency <20 Hz< 20\text{ Hz}<20 Hz, longitudinal wave

C

Ultrasound: frequency <20 Hz< 20\text{ Hz}<20 Hz, longitudinal wave; Infrasound: frequency >20 kHz> 20\text{ kHz}>20 kHz, transverse wave

D

Ultrasound: frequency <20 Hz< 20\text{ Hz}<20 Hz, transverse wave; Infrasound: frequency >20 kHz> 20\text{ kHz}>20 kHz, longitudinal wave

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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