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Two tuning forks A and B give 18 beats "...

Two tuning forks `A and B` give `18 beats "in" 2 s`. A resonates with one end closed air column of `15 cm` long and `B` with both ends open column of `30.5` long. Calculate their frequencies.

A

305, 295 Hz

B

295 Hz, 300 Hz

C

305 Hz, 300 Hz

D

300 Hz, 305 Hz

Text Solution

Verified by Experts

The correct Answer is:
C
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