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A sonometer wire of length L1 vibrates w...

A sonometer wire of length `L_1 `vibrates with a frequency 250 Hz. If the length of wire is in creased then 2 beats per second are heard. What is ration of the lengths of the wire?

A

`n_(0)(Deltal)//l`

B

`8n_(0)(Deltal)//l`

C

`2n_(0)(Deltal)//l`

D

`n_(0)(Deltal)//2l`

Text Solution

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The correct Answer is:
B
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