Two light beams of intersities I and 4I, respectively form interference fringes on a screen.
Channel: Doubtnut
Date: 2020-05-09

Two light beams of intersities I and 4I, respectively form interference fringes on a screen. For the two beams phase difference at point a is `(pi)/(2)` and at point B is `pi` . Find the difference in resultant intensities at A and B.