1.

A fork of unkown frequency when sounded with another fork of frequency 256 produces 4 beats/s. he first fork is loaded with wax. It again produces 4 beats/s. when sounded together with fork of 256 Hz frequency then the frequency of first tunning fork is :

Answer»

260 Hz
252 Hz
252 or 260 Hz
None of these

Solution :Since on LOADING the unknown tunning fork, the beat frequency remains the same .
`v_(2) = v_(1) + B = 256 + 4 ` = 260 Hz.
HENCE the correct choice is (a).


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