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Two waves are represented at a certain p...

Two waves are represented at a certain point by the equation`y_1 = 10 sin 2000 pi t and y_2 = 10 sin [ 2000 pi t + (pi//2)]`, for the resultant wave

A

The amplitude is 2000 `pi` units

B

The amplitude is `14.1` units

C

The frequency is 100 hertz

D

The frequency is `200 pit`

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The correct Answer is:
B
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