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Consider the arrangement shown in figure...

Consider the arrangement shown in figure. By some mechanism,
the separation between the slits `S_3 and S_4` can be changed. The intensity is
measured at the point P which is at the common perpendicular bisector of `S_1 S_2`
and `S_3 S_4`. When `z=(Dlambda)/(2d)`, the intensity measured at P is I. Find the intensity when
z is equal to

`(a)(Dlambda)/d (b)(3Dlambda)/(2d) (c) (2Dlambda)/d ` .

A

O,I,2I

B

I,O,2I

C

2I,O,I

D

I,2I,3I

Text Solution

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The correct Answer is:
A
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