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In a Young's double slit experiment , th...

In a Young's double slit experiment , the path difference at a certain point on the screen ,between two interfering waves is `1/8`th of wavelenght .The reatio of the intensity at this point to that at the center of abright fringe is close to :

A

0.853

B

0.568

C

0.672

D

0.76

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