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Question 43

A loudspeaker is connected to a signal generator, producing a sound wave in air with a frequency of 8500 Hz8500\text{ Hz}8500 Hz.

a.

Describe how the vibrating cone of the loudspeaker produces this sound wave and transmits it through the air.

[3]
b.

The speed of sound in air is 340 m/s340\text{ m/s}340 m/s. Calculate the wavelength of this sound.

[2]
c.

The loudspeaker is placed to the left of a barrier containing a small gap. The width of the gap is approximately equal to the wavelength of the sound wave.

Describe:

  1. The shape and orientation of the wavefronts as they travel towards the barrier.
  2. The wave phenomenon that occurs as the waves pass through the gap, and the shape of the wavefronts after passing through.
  3. How the wavelength after passing through the gap compares to the wavelength before reaching the barrier.
[3]
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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