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A tuning fork of frequency 512 Hz marks ...

A tuning fork of frequency 512 Hz marks 4 beat/s with the vibration string of a piano. The beat frequency decreases to 2 beat/s when the tension in the piano string is slightly incrased. The frequency of the piano string before increasing the tension was

A

508 Hz

B

510 Hz

C

514 Hz

D

516 Hz

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The correct Answer is:
A
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AAKASH INSTITUTE ENGLISH-WAVES-ASSIGNMENT ( SECTION-C ( Previous year Questions ))
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