1.

A fork P of unknown frequency gives six beats per second when sounded with another fork Q of frequency 260 Hz. The fork P is now loaded with a piece of wax and again six beats per second is heard, then frequency of fork P is

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A fork P of unknown frequency gives six beats per second when sounded with another fork Q of frequency 260 Hz. The fork P is now loaded with a piece of wax and again six beats per second is heard, then frequency of fork P is



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