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The figure shows a Young's double slit e...

The figure shows a Young's double slit experimental setup. It is observed that when a thin transparent sheet of thickness t and refractive index `mu` is put front of one of the slits, the central maximum gets shifted by a distance equal to n fringe widths. If the wavelength of light used is `lambda`, t will be :

A

`(2nD lambda)/(a(mu-1))`

B

`(nD lambda)/(a(mu-1))`

C

`(D lambda)/(a(mu-1))`

D

`(2D lambda)/(a(mu-1))`

Text Solution

Verified by Experts

The correct Answer is:
B
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