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Question 14

A sound wave travels at a speed of 339 m s-1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?

Answer

Speed of sound, = 339 m/s

Wavelength of sound, = 1.5 cm = 1.5 / 100 = 0.015 m

Speed of sound = Wavelength × Frequency

Frequency of of sound is 22600 Hz.

The audible range of the human ear is 20 Hz to 20000 Hz. It would not be audible.

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