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A long glass tube is held vertically in ...

A long glass tube is held vertically in water. A tuning fork is struck and held over the tube. Strong resonances are observed at two successive lengths 0.50 m and 0.84 m above the surface of water. If velocity of sound is `340 m s^(-1)`, then the frequency of the tuning fork is

A

128 Hz

B

256Hz

C

384Hz

D

500Hz

Text Solution

Verified by Experts

The correct Answer is:
D
`lamda=2(x_(2)-x_(1))=2(0.84-0.50)=0.68, n=(v)/(lamda)=(340)/(0.68)=500Hz`.
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