Question

a person has a hearing range from 20 hz to 20 khz what are the typical wavelength of sound in air corresponding of these two frequencies if the speed of sound in air is 344 metre per second ​

Answer 1

Explanation:

now we find wavelength

so, v= n lemda

= v = 344m\s

n = 20 hz ( first we find wavelength at frequency 20 hz)

so, 344 = 20* lemda

= 344/20 = lemda

= 17.2 = lemda

again with frequency 20000hz

344 = 20000* lemda

= 344/20000= lemda

= 0.0172 = lemda

wavelength = 17.2m to 0.0172 m