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In a double slit experiment, the slits a...

In a double slit experiment, the slits are separated by a distance `d` and the screen is at a distance `D` from the slits. If a maximum is formed just opposite to each slit, then what is the order of the fringe so formed ?

A

`d^2/(2 lambda D)`

B

`(2d^2)/(lambdaD)`

C

`d^2/(lambdaD)`

D

`d^2/(4 lambdaD)`.

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