Question

Why is angle of deviation vary with angle of incidence?

Answer 1

The deviation angle in a prism depends upon: Refractive index of the prism: The refractive index depends on the material and the wavelength of the light. ... Angle of incidence: Thedeviation angle depends on the anglethat the beam enters the object, calledangle of incidence.

Answer 2

The deviation angle in a prism depends upon: Refractive index of the prism: The refractive index depends on the material and the wavelength of the light. ... Angle of incidence: The deviation angle depends on the angle that the beam enters the object, called angle of incidence.