Question

if the glass slab is of the following shape, and the experiment is performed as above, will the effects be the same ? Here S1 and S2 are slab surfaces parallel to each other

Answer 1

In a glass slab opposite sides are parallel. The angle of refraction becomes the angle of incidence in the second face. The emergent ray bends in such a way that the angle of incidence becomes the angle of emergence. In this case the incident ray and the emergent ray will not be parallel to each other

Answer 2

The angle of refraction becomes angle of incidence . And in second surface angle of incidence become angle of refraction . and the emergent will not be parallel to each other