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Two monochromatic coherent light beams A...

Two monochromatic coherent light beams A and B have intensities L and `(L)/(4)` respectively.If these beams are superposed the maximum and minimum intensities will be

A

`(9L)/(4),(L)/(4)`

B

`(5L)/(4)`

C

`(5L)/(2)`

D

2L, `(L)/(2)`

Text Solution

Verified by Experts

`I_("max")= (sqrtL+sqrt((L)/(4)))^(2)=(9L)/(4)`
`I_("min")=(sqrtL-sqrt((L)/(4)))^(2)=(L)/(4)`
The option A is correct.
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