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Two coherent sources of intensity ratio ...

Two coherent sources of intensity ratio a interfere. The value of `(I_("max")-I_(min))/(I_("max")+I_(min))` is ....

A

`2sqrt((alpha)/(1+alpha))`

B

`(2 sqrt(alpha))/(1+alpha)`

C

`(1+alpha)/(2sqrt(alpha))`

D

`(1-alpha)/(1+alpha)`

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The correct Answer is:
B
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