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two sound sources are moving in oppostive directions with velocities ` v_(1) and v_(2) ( v_(1) gt v_(2))` . Both are moving away from a stationary observer. The frequency of both the sources is 900 Hz. What is the value of ` v_(1) - v_(2)` so that the beat frequency aboserved by the observer is 6 Hz. speed of sound v= 300 m/s given ,that `v_(1) and v_(2) lt lt v `

A

`1 m//s`

B

`2m//s`

C

`3m//s`

D

`4m//s`

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The correct Answer is:
B
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