State the dependence of angle of deviation :

(i) For a given angle of incidence, the prism with a higher refractive index produces 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 material of the prism.

(ii) Angle of deviation decreases with the increases in the wavelength of light.
Angle of Deviation (δ) ∝ $\frac{1}{\text{wavelength}}$