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Question: A tuning fork gives 4 beats with 50 cm length of a sonometer wire. If the length of the wire is shor...

A tuning fork gives 4 beats with 50 cm length of a sonometer wire. If the length of the wire is shortened by 1 cm, the number of beats is still the same. The frequency of the fork is–

A

404 Hz

B

400 Hz

C

396 Hz

D

384 Hz

Answer

396 Hz

Explanation

Solution

v =, f = vλ\frac { v } { \lambda }