Question

In a Young’s double-slit experiment, let
 be the fringe width, and let 0 I be
the intensity at the central bright
fringe. At a distance x from the central
bright fringe, the intensity will be

Answer 1

Explanation:

I' = I cos²(Φ/2)

Φ = 2Π  Δx / λ

   = 2Π D/β

Here  distance x is the distance from the central  bright fringe

I' = I cos² (Π x /β)