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With what velocity should you approach t...

With what velocity should you approach tuning fork of frequency 256 Hz so that the apparent frequency is 512 Hz. Velocity of sound in air is 340 m/s

A

340 m/s

B

320 m/s

C

260 m/s

D

540 m/s

Text Solution

Verified by Experts

The correct Answer is:
A
`n' = n [(v + v_(0))/(v)]`
`512 = 256 [(340 + v_(0))/(340)]`
`2 xx 340 = 340 + v_(0)`
`2 xx 340 - 340 = v_(0)`
`v_(0) = 340 m//s`
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