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Length of a sonometer wire is either 95 ...

Length of a sonometer wire is either 95 cm or 100 cm. In both the cases a tuning fork produces 4 beats then the frequency of tuning fork is :-

A

152

B

156

C

160

D

164

Text Solution

Verified by Experts

The correct Answer is:
B
For sonometer wire
`nxx100=(n+1)xx95`
n=no of harmonics
`rArr n =19`
`:. f=19((L)/(2))+4=20((L)/(2))-4rArr L=16`
`rArrf=20((L)/(2))-4=156 Hz`
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