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Frequency

(4) AA tuning...

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(4) AA tuning fork of frequency 512 Hz makes 4 beatsper second with the vibrating string of a piano. Thebeat frequency decreases to 2 beats per sec whenthe tension in the piano string is slightly increasedThe frequency of the piano string before increasingthe tension was \lbrack AIPMT (Prelims)-2010\rbrack SI(2) 510 Hz(4) 516 Hz(1) 508 Hz(3) 514 Hz

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