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A source of unknown frequency gives 4 beats/s - when sounded with a source of known frequency 250HzThe second harmonic of the source of unknownfrequency gives five beats per second - when soundedwith a source of frequency 513 HzThe unknownfrequency is [NEET2013]

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A source of unknown frequency gives 4 beats/s - when sounded with a source of known frequency 250HzThe second harmonic of the source of unknownfrequency gives five beats per second - when soundedwith a source of frequency 513 HzThe unknownfrequency is [NEET2013]






 
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