Two sounding bodies are producing progressive waves given by and where is in second

PHYSICS · Single correct · CBSE · Physics · Waves · Waves

Problem

Two sounding bodies are producing progressive waves given by y1=2sin⁡(400πt)y_1 = 2 \sin(400\pi t) and y2=sin⁡(404πt)y_2 = \sin(404\pi t) where tt is in second, which superpose near the ears of a person. The person will hear (1) 2 beats/s with intensity ratio 9/4 between maxima and minima (2) 2 beats/s with intensity ratio 9 between maxima and minima (3) 4 beats/s with intensity ratio 16 between maxima and minima (4) 4 beats/s with intensity ratio 16/9 between maxima and minima

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