A man is standing on a railway platform listening to the whistle of an engine, that passes the man at constant speed without stopping. If the engine passes the man at time `t_(0)`, how does the frequency f of the whistle as head by the man changes with time ?

An observer is standing on a railway platform. He hears the whistle of railway engine moving towards him and then passing. He fells that

An observer is standing on a railway platfonn. He hears the whistle of a railway engine moving towards him and then passing. He feels that

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 sitting in a moving train hears the whistle of the engine. The frequency of the whistle is 600 Hz

A man sitting in a moving train hears the whistle of the engine. The frequency of the whistle is 600 Hz

A man sitting in a moving train hears the whistle of the engine. The frequency of the whistle is 600 Hz