Question

A man has an audible range from 20 hz to 20 khz . What are the wavelengths of sound in corresponding to these two frequencies ? (speed sound in air is 344 m/s)

Answer 1

We know, velocity =

frequency ×wavelength .

So wavelength = velocity ÷ frequency

For 20 Hz,

Wavelength = 344÷20= 17.2m.

And for 20 kHz or 20,000 Hz,

Wavelength= 344÷20000=0.0172m.

Here you go.