A source of unknown frequency gives 4 beat/s when sounded with a source of unknown frequency 250 Hz. The second harmonic of the source of unknown frequency gives 5 beats per sec when sounded with a source of frequency 513 Hz. The unknown frequency is (in Hz).
Text Solution
Verified by ExpertsThe correct answer is:
A
or 246
and 
or 508
As 
So, Required frequency 
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