wave optics

The ratio of intensity at the center of a bright fringe to the intensity at the point one quarter of fringe width from center is?

2 Answers

arey yeh easy hai!

y = Î»D/4d

=> Î”x/d = y/D.

=> Î”x = Î»/4

now find delÎ¸... and hence intensity at that point.

and hence the ratio...

Thanks didi

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