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On introducing a thin sheet of mica (thi...

On introducing a thin sheet of mica (thickness `12 xx 10^(-7)` cm) in path of one of the interfering beams (`lambda_("vacuum") = 600 nm`) in Young's double-slit experiment, the central fringe is shifted through a distance equal to the spacing between successive bright fringes. Calculate the refractive index of mica.

A

`1.33`

B

`1.5`

C

`2.5`

D

`1.4`

Text Solution

Verified by Experts

The correct Answer is:
B
`S=((mu-1)tD )/(d) and w=( lamda D )/(d) ` given ,` S =W implies mu = (( lamda )/( t) +1) =1.5`
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