A man standing near a railway line hears the whistle of an engine, which has a velocity of 20 ms^(-1) What frequency does the man hear , when the engine is coming towards and going away from him, if the true frequency of the whistle is 1000 Hz.Speed of sound in air =340 ms^(-1).

A man standing near a railway line hears the whistle of an engine, whi

1.	A man standing near a railway line hears the whistle of an engine, which has a velocity of 20 ms^(-1) What frequency does the man hear , when the engine is coming towards and going away from him, if the true frequency of the whistle is 1000 Hz.Speed of sound in air =340 ms^(-1).
Answer» ANSWER :1062.5 HZ, 944.4 Hz