NEET Physics Waves Questions Solved

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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 

(1) 12sec

(2) 14sec

(3) 18sec

(4) 116sec

(3) Beat period T=1n1~n2=1384380=14sec.

Hence minimum time interval between maxima and minima t=T2=18sec.

Difficulty Level:

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