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

In a Young's double slit experiment, the separation of the two slits is doubled. To keep the samme spacing of fringes, the distance D of the screen from the slits should be made

A

2D

B

D

C

`D/2`

D

3D

Text Solution

Verified by Experts

The correct Answer is:
A
`X=X'`
`(lamdaD)/(d)=(lamdaD')/(2d)`
`therefore D'=2D`
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