A source of sound with adjustable frequency produces 2 beats per second with a tuning fork when its frequency is either 476 Hz of 480 Hz. What is the frequency of the tuning fork?
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If the frequency of the tuning fork = ν, then either ν - 476 = 2 or 480 - ν = 2. Equating them, ν - 476 = 480 - ν →2ν = 956 →ν = 478 Hz
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