Show that, the change in frequency of sound during the motion of the source towards audience is more than that when audience moves towards source with same velocity.

Show that, the change in frequency of sound during the motion of the s

1.	Show that, the change in frequency of sound during the motion of the source towards audience is more than that when audience moves towards source with same velocity.
Answer» Solution :Natural frequency of the source `=N,` VELOCITY of sound `=V,` velocity of the source = v and velocity of the audience = u. So apparent change in frequency = Doppler shift (`(Deltan)` `(v+u)/(V-v) n` When the source of sound remains stationary, v = 0 . When the audience MOVES towardes the source, `Deltan_(1) =u/V n` When the audience is stationary, u = 0. when the source moves towards the audience with the same velocity (i.e., v = u). `Deltan_(2) =u/(V-u) n` Clearly, `Deltan_(2)GT DELTA n_(1)`