(a) Name the factors on which deviation of a ray of light through a prism depends.
(b) Name the factors on which (angular) dispersion of light through a prism depends.

Explanation

(a) The deviation of a ray of light passing through a prism depends on angle of prism, nature of material of the prism and angle of incidence of the ray.
(b) (Angular) dispersion of light through a prism depends on angle of prism and nature of material of the prism.