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Question

A source emitting a sound of frequency v is placed at a large distance from an observer. The source starts moving towards the observer with a uniform acceleration a. Find the frequency heard by the observer corresponding to the wave emitted just after the source starts. The speed of sound in the medium is v.

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Solution

Required frequency n

=ν+v0vvsv=vvat.v

=v.vva.12v=2νv22νva


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