Question

. Show that in a two-slit interference pattern the intensity at a point is given by = (1 − 2) 2 + 4122 ( 2 ) Where k is a constant of the set up and x is the linear distance of this point from the central fringe.

Answer 1

= 4a1a2cos2(kx/2) + (a1 a2)2

Where k is a constant of the set up and x is the linear distance of this point from the

central fringe