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In an arrangement to view the interferen...

In an arrangement to view the interference pattern produced by a wedge of liquid between a microscope slide and a glass block thhe interference pattern obtained is made is equal spaced parallel fringes. The fringe separation (or fringe width) can not be decreased by which of the following actions.

A

by increasing the angle of the liquid wedge

B

by unig a liquid of smaller refractive index.

C

by using a thicker glass block.

D

by unimg a longer liquid wedge of the same angle.

Text Solution

Verified by Experts

The correct Answer is:
BCD
Fringe width `prop(Llamda)/(Dn)`
also fringe width `prop` thickness of glass block.
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