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A sound wave of frequency 'v' Hz initia...

A sound wave of frequency 'v' Hz initially travels a distance of 1 km in air.Then it gets reflected into a water reseroir of depth 600 m. The frequency of the wave at the bottom of the reervoir is ` ( v_(air ) =340 m/s ,v_( water ) =148 m/s ) `

A

` gt v Hz `

B

` lt v Hz `

C

` v Hz `

D

` 0`

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The correct Answer is:
C
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