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A sonometer wire carries a brass weight ...

A sonometer wire carries a brass weight of density 8 gm/cc at its free end and has a fundamental frequency 320 Hz, when the brass weight is completely immersed in water , then new frequency will be

A

340Hz

B

320Hz

C

280Hz

D

300Hz

Text Solution

Verified by Experts

The correct Answer is:
D
`n_1 prop sqrt(T_1) " and " n_2 prop sqrt(T_2)`
Loss of weight `=T_1-T_2 therefore Vrhog = T_1-T_2`
`T_2=T_1 - vrhog`
`n_2/n_1 = sqrt(T_2/T_1) " and " n_2/n_1 = sqrt((rho-rho_1)/(rho))`
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