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The displacement of two interfering ligh...

The displacement of two interfering light waves are `y_(1) = 4 sin omega t` and `y_(2) = 3 cos omega t`. The amplitude of the resultant wave is (`y_(1)` and `y_(2)` are in CGS system)

A

5 cm

B

7 cm

C

1 cm

D

zero

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The correct Answer is:
A
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