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Two tuning forks A and B produce 8 beat/...

Two tuning forks A and B produce 8 beat/s when sounded together. When B is slightly loaded with a wax the beats are reduced to 4 per sec. If the frequency of A is 512 Hz, the frequency of B is

A

508 Hz

B

516 Hz

C

504 Hz

D

520 Hz

Text Solution

Verified by Experts

The correct Answer is:
D
`n_(B) = n_(A) +- 8`
`= 512 +- 8 = 520 or 504 Hz`
`n_(B) = 512 +- 4 = 516 or 508 Hz`
`:. n_(B) = 520 Hz`
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