Two tuning forks have frequencies $380$ and $384 Hz$ respectively. When they are sounded together, they produce $4$ beats. After hearing the maximum sound, how long will it take to hear the minimum sound .... $\sec$
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(c) Beat period $T = \frac{1}{{{n_1}\sim{n_2}}} = \frac{1}{{384 - 380}} = \frac{1}{4}\sec $.
Hence minimum time interval between maxima and minima $t = \frac{T}{2} = \frac{1}{8}\sec .$
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