16.6 Refraction in Prisms, Prism Formula

An incident ray into a glass prism is deviated due to refraction which occurs twice, once at the boundary separating air-glass and next at the boundary separating glass-air as shown in figure (i).

The passage of light incident from air into a glass prism is deviated due to refraction occurring twice, once at the boundary separating air-class and next at the boundary separating glass-air as shown in figure 17.

The geometry of prism imposes relations between i.e., A, S and r₁, r₂, A as follows :

Index

Light

16.1 Laws of Reflection at plane surfaces
16.2 Mirrors
16.3 Laws of Refraction at plane surfaces, Refractive Index and Critical Angle
16.4 Refraction at curved spherical surfaces and Lens maker’s formula
16.5 Lenses
16.6 Refraction in Prisms, Prism Formula
16.7 Dispersion of Light, Angular Dispersion and Dispersive Power
16.8 Optical Instruments and Magnifying Power

Chapter 17