Plane wavefronts are incident on a glass slab which has

Last updated: 6/12/2023

Plane wavefronts are incident on a glass slab which has refractive index as a function of distance Z according to the relation 1 Z Z This glass slab can acts as lens of focal length F By using the concept of optical path length calculate the focal length of the slab Consider t and z to be very small as compared to F A Z 2 t C Z 2t B Z t D None 2 Z