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What is the effect on the interference p...

What is the effect on the interference pattern in Young's double slit experiment if following operations are performed?

A

Screen is moved away from the plane of slits

B

The separation between the slits is decreased

C

The separation between the slits is increased

D

Red light is replaced by blue light

Text Solution

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`beta=(lambdaD)/d`
(a)fringe width increases
(b)fringe width increases
(c )fringe width decreases
(d)`lambda_R gt lambda_b` , fringe width decreases
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