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In a Young's double slit experiment, I0 ...

In a Young's double slit experiment, `I_0` is the intensity at the central maximum and `beta` is the fringe width. The intensity at a point P distant x from the centre will be

A

`I_(0)"cos"(pix)/(beta)`

B

`4I_(0)"cos"^(2)(pix)/(beta)`

C

`I_(0)"cos"^(2)(pix)/(beta)`

D

`(I_(0))/(4)"cos"^(2)(pix)/(beta)`

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