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When a mica plate of thickness 0.1 mm is...

When a mica plate of thickness `0.1` mm is introduced in one of the interfering beams, the central fringe is displaced by a distance equal to 10 fringes. If the wavelength of the light is `6000 Å` , the refractive index of the mica is

A

`1.06`

B

`1.6`

C

`2.4`

D

`1.3`

Text Solution

Verified by Experts

The correct Answer is:
A
Shift ` = (beta)/(lambda) (mu - 1) t `
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