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The central fringe of the interference p...

The central fringe of the interference pattern produced by the light of wavelength 6000 Å is found to shift to the position of 4th dark fringe after a glass sheet of refractive index 1.5 is introduced. The thickness of glass sheet would be

A

`4.8mu m`

B

`4.2mu m`

C

`5.5mu m`

D

`3.0mu m`

Text Solution

Verified by Experts

The correct Answer is:
B
`(mu - 1)t = (2n - 1) (lambda)/(2)`
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