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Two sound sources are moving in opposite...

Two sound sources are moving in opposite 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

`1m//s`

B

`2m//s`

C

`3m//s`

D

`4m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
`f_(1)=900((300)/(300+V_(1)))" "f_(2)=900((300)/(300+V_(2)))" "f_(2)-f_(1)=6`
`implies V_(1)-V_(2)=2m//s`
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