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