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  • Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also define wavelengths and time period using this curve.

Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also, define wavelengths and time period using this curve.

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Explanation:-

In the propagation of sound, the particle of the medium oscillates.
The time to complete one oscillation is called time period T.

Pitch is the frequency of sound, which tells us the number of oscillations, any particle will make in one second.

f=\frac{1}{T}

Distance between two consecutive crests or consecutive troughs is equal to the wavelength of any sound.

The diagram above illustrates a sinusoidal wave representing the variations in density or pressure caused by sound.

  • The wavelength is marked as the distance between two consecutive compressions or rarefactions.
  • The time period is defined as the time taken for one complete wave cycle.

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