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A fork of unknown frequency gives 4 beat...

A fork of unknown frequency gives 4 beats per second when sounded with another of frequency `256`. The fork is now loaded with a piece of wax and again 4 beats per second are heard. Calculate the frequency of the unknown fork.

A

256 Hz

B

252 Hz

C

264 Hz

D

260 Hz

Text Solution

Verified by Experts

The correct Answer is:
D
Frequency of unknown fork `=256 pm 4=260` or `252`.
As frequency decreases on loading, therefore, original
frequency of unknown fork `=260` Hz.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-WAVE MOTION-Exercise 2
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