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

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Solution:

The tuning fork whose frequency is being tested produces 2 beats with oscillator at , therefore, frequency of tuning fork may either be 512 or With oscillator frequency 510 it gives 6 beats/sec, therefore frequency of tuning fork may be either 516 or 504 .Therefore, the actual frequency is which gives 2 beats/sec with and 6 beats/sec with .