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Two sitar strings A and B playing the no...

Two sitar strings A and B playing the note ‘Ga’ are slightly out of tune and produce beats of frequency 6 Hz. The tension in the string A is slightly reduced and the beat frequency is found to reduce to 3 Hz. If the original frequency of A is 324 Hz, what is the frequency of B?

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318 Hz
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AAKASH SERIES-WAVE MOTION AND SOUND-PROBLEMS (LEVEL - I)
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