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02-01-2024
Physics

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A tuning fork A of frequency 512Hz produces 5 beats per second when sounded with another tuning fork B of unknown frequency. If B is located with wax the number of beats is again 5 per second. The frequency of the tuning fork B before it was loaded is
A. 502Hz
B. 507Hz
C. 517Hz
D. 522Hz

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