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In Melde's experiment, the string vibrat...

In Melde's experiment, the string vibrates in 4 loops when a 50 gram weight is placed in the pan of weight 15 gram . To make the string to vibrates in 6 loops the weight that has to be removed from the pan is

A

`72gm`

B

`36gm`

C

`21gm`

D

`29gm`

Text Solution

Verified by Experts

The correct Answer is:
B
`n_(P)=(P)/(2l)sqrt((T)/(mu))impliesPsqrt(T)=` constant `m_(1)=65gm`
`M_(2)=M_(1)-Deltam=65-Deltam`
`Psqrt(M)=` constant `( :. T=Mg)`
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