Question

A listener moves towards a stationary source of sound with a velocity one fifth of the velocity of sound. What is the percentage increase in the apparent frequency?

Answer 1

Hence listener moves towards the source.

V_L = –\(\frac{V}{5}\) , V_s = 0 

V_L – Velocity of listener 

V_S – Velocity of source 

V – Velocity of sound 

Apparent frequency = n'

The percentage increase in apparent frequency

= 20%