Consider a plane glass slab of thickness d made of a material of refractive index n, place...

Consider a plane glass slab of thickness d made of a material of refractive index n, placed in air. By simple application of Snell’s law obtain an expression for the spherical aberration of the slab. What are other kinds of aberrations that the image will suffer from?

(Ans. Spherical aberration = , where h is the height at which

the ray strikes the slab, and u is the distance of the object point from the

front surface of the slab.)