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Two coherent waves are represented by y(...

Two coherent waves are represented by `y_(1)=a_(1)cos_(omega)` t and `y_(2)=a_(2)sin_(omega)`t. The resultant intensity due to interference will be

A

`a_(1) - a_(2)`

B

`a_(1) + a_(2)`

C

`a_(1^(2)) - a_(2^(2))`

D

`a_(1^(2)) + a_(2^(2))`

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The correct Answer is:
D
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