Q. 54.1( 98 Votes )

A person has a he

Answer :


Speed, v = 344 m/s

Frequency, f = 20 Hz

Wavelength, λ1 =?

We know that,

v = f × λ

Where v is the speed of the wave,
           λ is the wavelength.

Putting the values in the above equation, we get 

λ1= = 17.2 m 

When the frequency is 2 KHz:

Wavelength, λ2=?

λ2= = 0.0172 

Therefore, the wavelength of sound in air having frequencies corresponding 20 Hz is 17.2 m and  20 KHz is 0.0172 m respectively.

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