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YDSE is conducted using light of wavelen...

YDSE is conducted using light of wavelength `6000 Å` to observe an interference pattern. The slits are `2mm` apart. The fringes are observed on a screen `10cm` away from the slits. When a film of some material `0.5mm` thick was placed over one of the slits, the fringe pattern shifted by a `5mm`. What is the refractive index of the material of the film ?

A

`1.2`

B

`1.5`

C

`1.8`

D

`4//3`

Text Solution

Verified by Experts

The correct Answer is:
A
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