Question

A double slit experiment is shown in the figure.
Each slit has width W. A thin piece of glass of
thickness δ refractive index µ, is placed between
one of the slits and the screen. The intensity at
the central point is measured as a function of
thickness δ. For what values of δ is the intensity
at C is minimum

Answer 1

Answer:

OPTION (2) is correct

Explanation:

We use the concept of path difference and the relation of PD for a minima

Refer the attachement for detailed solution!

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