In a Fresnel's  biprims experiment fringes widht `0.05` mm are observed on a screen at a
Channel: Doubtnut
Date: 2020-06-28

In a Fresnel's  biprims experiment fringes widht `0.05` mm are observed on a screen at a distance of `1.5` m from the source. When a convex lens is placed between  the source and the screen, are `0.04` mm and `0.1` mm resepectively. The wavelenght of light used is s