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Ratio of intensities between a point A a...

Ratio of intensities between a point A and that of central fringe is 0.853. If we consider slits are of equal width then path difference between two waves at point A will be :

A

`(lambda)/(2)`

B

`(lambda)/(4)`

C

`(lambda)/(8)`

D

`lambda`

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The correct Answer is:
C
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