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A monochromatic beam of light is used fo...

A monochromatic beam of light is used for the formation of fringes on a screen by illuminating the twoslits in the Young,s double slit interfrence experiment. When a thin film of mic is interposed in the path of one of the interfering beams

A

the fringe-width increases

B

the fringe-width decreases

C

the fringe pattern disappears

D

fringe-width remains the same but the pattern shifts

Text Solution

Verified by Experts

The correct Answer is:
D
Shift `= (mu -1) (tbeta)/(lambda)`
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