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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

`2 m//s `

C

`3 m//s `

D

` 4m//s `

Text Solution

Verified by Experts

The correct Answer is:
B
`1700{(340)/(340 + V_2) - (340)/(340 + V_1)}=10`
`implies (1700 xx 340)/(340) {(1-(V_2)/(340))-(1-(V_1)/(340))}=10`
`or (1700 (V_1 -V_2))/(340)=10 " or " V_1 - V_2 = 2m//s `
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