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In a double slit experiment the screen i...

In a double slit experiment the screen is placed at a distance of 1.25m from the slits when the apparatus is immersed in water `(muomega=4/3)`the angular width of a fringe is found to be `0.2^@` when the experiment is performed in air with same set up the angular width of the fringe is

A

`0.4^@`

B

`0.28^@`

C

`0.35^@`

D

`0.15^@`

Text Solution

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The correct Answer is:
B
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