Question

A sound wave having certain frequency travels with the speed of 336 m/s and wavelength 3 cm. Calculate the frequency. Will it be audible

Answer 1

relation between velocity ,frequency and wavelength is , velocity = freq. * wavelength
therefore
336m/s = n * 0.03(3cm =0.03m
therefore
n= 11200(336/0.03) =11.2K
it will be audible as it lies between 20Hz -20KHz

Answer 2

Answer:

Frequency = 11200 s^-1.

Explanation:

The relation among wavelength, frequency and velocity is given below:

f = c / λ, where f is the frequency, c is the velocity and λ is the wavelength.

Velocity= 336m/s

Wavelength= 3cm = 0.03m ( 100cm= 1 m)

So frequency = 336/0.03 = 11200 s^-1 or Hertz.

The audible range of frequencies lie between 20-20,000Hertz, so 11200 Hertz falls within the range and hence is audible.