NEET Physics Waves Questions Solved

A tuning fork whose frequency as given by manufacturer is 512 Hz is being tested with an accurate oscillator. It is found that the fork produces a beat of 2 Hz when oscillator reads 514 Hz but produces a beat of 6 Hz when oscillator reads 510 Hz. The actual frequency of fork is 

(1) 508 Hz

(2) 512 Hz

(3) 516 Hz

(4) 518 Hz

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