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Two tuning forks P and Q when set vibrat...

Two tuning forks P and Q when set vibrating give 4 beats per second. If a prong of the fork P is filed, the beats are reduced to 2 per second. Determine the frequency of P, if that of Q is 250 Hz.

A

246 Hz

B

250 Hz

C

254 Hz

D

252 Hz

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The correct Answer is:
A
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