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Physics-

General

Easy

Question

In Young’s experiment, monochromatic light is used to illuminate the two slits A and B. Interference fringes are observed on a screen placed in front of the slits. Now if a thin glass plate is placed normally in the path of the beam coming from the slit

The fringes will disappear
The fringe width will increase
The fringe width will increase
There will be no change in the fringe width but the pattern shifts

The correct answer is: There will be no change in the fringe width but the pattern shifts

In the presence of thin glass plate, the fringe pattern shifts, but no change in fringe width.

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