In Young's experiment, monochromatic lig...

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 decrease

there will be no change in the fringe width but the pattern shifts

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