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A tuning fork A gives 4 beats per sec wi...

A tuning fork A gives 4 beats per sec with a tuning fork B of frequency 120 Hz . When B is filed slightly beats disappear . Frequency of A Is

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A resonance column when vibrated with a tuning fork of frequency 480Hz produces maximum sound with air column of length 16cm and 51cm respectively. Find (I) the speed of sound

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