An observer moves towards a stationary source of sound with a velocity 1/5 of the velocity of sound. What is the percentage increase in the apparent frequency?
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An observer moves towards a stationary source of sound with a velocity one-fifth of velocity of sound. The percentage increase in apparent frequency is 20.0%
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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'.
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