An observer 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?

Step-by-step solution

Given : v₀= v 5 v₀= 320 5 =64 ~m / s When observer moves towards the stationary source, then n^ = ( v+v_ o v ) n array l n^ = ( 320+64 320 ) n n^ = ( 384 320 ) n n^ n = 384 320 array Hence, percentage increase aligned ( n^ -n n ) &= ( 384-320 320 100 ) % &= ( 64 320 100 ) %=20 % aligned