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A stretched sonometer wire is in unison ...

A stretched sonometer wire is in unison with a tuning fork. When length of wire is increase by 1%, the number of beats heard per second is 5. then, the frequency of the fork is

A

500 Hz

B

505 Hz

C

255 Hz

D

250 Hz

Text Solution

Verified by Experts

The correct Answer is:
B
let frequency of tuning fork
be `n_(1)`.
`(n_(2))/(n_(1))=(100)/(101)`
As `n_(1)-n_(2)=5`
So, `n_(1)=505Hz`
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