Question

State Doppler effect. Give its applications. A train is travelling at a speed of 90 Km/h. The frequency of note produced by the whistle of train is 520 Hz. Find the frequency of sound heard by a stationary observer when the train approaches him. (Velocity of sound = 340 m/s.)

Answer 1

HEYA GN ^_^

# DOPPLER EFFECT :- the apparent change in frequency or pitch due to relative motion of source and observer along the line of sight is called Doppler Effect.