Question

Answer any one question​

Answer 1

Answer:   : )

After refraction at two parallel faces of a glass slab, a ray of light emerges in a direction parallel to the direction of incidence of white light on the slab. As rays of all colours emerge in the same direction (of incidence of white light), hence there is no dispersion, but only lateral displacement.

Answer 2

Answer:

muzhè nahi pata OK bye ?????????