Q 16 A parallel beam of light travelling in x direction is

Last updated: 6/8/2023

Q 16 A parallel beam of light travelling in x direction is incident on a glass slab of thickness t The refractive index where o is of the slab changes with y as 1 10 1 F the refractive index along x axis and yo is a constant The light beam gets focused at a point F on the x axis By using the concept of optical path length calculate the focal length f Assume f t and consider y to be small 2 Yo y X