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The separation between successive fringe...

The separation between successive fringes in a double slit arrangement is x. If the whole arrangement is dipped under water, what will be the new fringe separation ? [The wavelength of light being used is `5000 Å`]

A

`1.5x`

B

x

C

`0.75x`

D

`2x`

Text Solution

Verified by Experts

The correct Answer is:
C
When the arrangement is dipped in water, `beta' = (beta)/(mu) = (x)/(4//3) = (3)/(4)x = 0.75x`
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