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Two progressive waves y(1) = 4 sin 400 p...

Two progressive waves `y_(1) = 4 sin 400 pi t and y_(2) = 3 Sin 404 pi t` moving in the same direction superpose on each other producing beats. Then the number of beats per second and the ratio of maximum to minimum intensity of the resultant waves are respectively

A

2 and `5/1`

B

4 and `49/1`

C

4 and `16/9`

D

2 and `49/1`

Text Solution

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The correct Answer is:
D
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