Physics

Problem

Two sounding bodies are producing progressive waves given by

y_1 = 2 \sin(400\pi t)

and

y_2 = \sin(404\pi t)

where

t

is in second, which superpose near the ears of a person. The person will hear a. 2 beats/s with intensity ratio 9/4 between maxima and minima b. 2 beats/s with intensity ratio 9 between maxima and minima c. 4 beats/s with intensity ratio 16 between maxima and minima d. 4 beats/s with intensity ratio 16/9 between maxima and minima

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