Explain Doppler effect in sound. Obtain an expression for the apparent frequency sound when the source is moving towards the stationary observer with uniform velocity.
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When a sounding body passes near a stationary person, a considerable change in the pitch of sound is detected. When the body is approaching, the pitch of the sound increases where as the pitch of sound decreases when the sounding body is moving away. A similar change in pitch also occurs when a moving listener passes a stationary source of sound.
All these apparent changes in the pitch of sound are referred to as 'DOPPLER'S EFFECT'.
All these apparent changes in the pitch of sound are referred to as 'DOPPLER'S EFFECT'.
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