A narrow paraxial beam of light is converging towards a

Last updated: 6/10/2023

A narrow paraxial beam of light is converging towards a point I on a screen A plane plate of glass of thickness t and a refractive index is introduced in the path of the beam The convergence point is shifted by 1 t 1 1 u away 2 t 1 1 u away 3 t 1 1 nearer 4 t 1 1 nearer