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A thin mica sheet of thickness 2xx10^-6m...

A thin mica sheet of thickness `2xx10^-6m` and refractive index `(mu=1.5)` is introduced in the path of the first wave. The wavelength of the wave used is `5000Å`. The central bright maximum will shift

A

2 fringes upwards

B

4 fringes upwards

C

10 fringes downwards

D

8 fringes downwards

Text Solution

Verified by Experts

The correct Answer is:
A
Shift`=((n-1)t)/(lamda)=(1)/(2)xx(2xx10^(-6))/(5xx10^(-7))=2`
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