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The difference between the apparent freq...

The difference between the apparent frequency of a sound of soun as perceived by an observer during its approach and recession is `2%` of the natural frequency of the source. If the velocity of sound in air is `300m//s`, the velocity of the source is (It is given that velocity of source `ltlt velocity of sound )

A

`6 m//sec`

B

`3 m//sec`

C

`1.5 m//sec`

D

`12m//sec`

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The correct Answer is:
B
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