The given diagram shows a ray of light incident on an equilateral glass prism placed in minimum deviation position. How are angle of incidence and angle of emergence related to each other in this position of the prism?
Angle of incidence (i) = Angle of emergence (e)
The complete ray diagram is shown below.
In the position of minimum deviation, both the angle of incidence and the angle of emergence are equal, i.e. Angle of incidence (i) = Angle of emergence (e)