Question

A man has an audible range from 20 Hz to 20KHz .what are the wavelengths of sound in
corresponding to these two frequencies?

Answer 1

Let, the speed of sound in air be 340m/s

The wavelengths of sound in
corresponding to these two frequencies are...

5.88 cm for 20Hz frequency
5880 cm for 20KHz frequency


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Answer 2

Speed=wave length * frequency

Wavelength = speed / frequency

Therefore:

1. Frequency of sound

       Speed of sound = 344

        The Wave length will be = 344/20= 17.2 m

2. If Frequency of sound=20khz (20000 hz)

           Speed of sound = 344

           The Wave length will be = 344/20000 = 0.0172