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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 . 5 `x

B

x

C

0 . 75 x

D

2 x

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 . 75 x`
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