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  4. 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

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Q. 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 slitPhysics Question Image

Wave Optics

Solution:

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