Q. Tuning fork has a frequency of and it is observed to produce 6 beats/second with another tuning fork . When is loaded with wax, it still produces 6 beats/second with . The frequency of before loading was

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Solution:

Known frequency ?
bps, which is decreasing (i.e., after loading (from 6 to 1 bps)
bps, which remains the same after loading.
Unknown tuning fork is loaded so
Hence (i) Wrong
(ii) Correct