Question

A man has an audible range from 20Hzto20kHz.what are the wavelengths of sound in corresponding to these two frequencies?(speed sound in air is 344m/s)

Answer 1

Speed = nu* lamda
Or, speed = frequency*wavelength
Case 1
Frequency = 20hz
So
344=20*wavelength
Wavelength = 344/20=17.2m

Case 2
Frequency = 20000hz
So wavelength = 344/20000=0.0172m