State the dependence of angle of deviation:
(i) On the refractive index of the material of the prism.
(ii) On the wavelength of light

(i) For a given angle of incidence, the prism with higher refractive index produces a greater deviation than the prism which has a lower refractive index. Thus, the angle of deviation increases with an increase in the refractive index of the medium.

(ii) The angle of deviation decreases with an increase in the wavelength of light. Thus, a prism deviates violet light the most and red light the least.