How does the value of angle of deviation produced by a prism changes with an increase in the value of angle of incidence.

Dear student ,

There are two ways to analyse this:
1. By equation: this is lot more easier to analyse from equation
  for a prism : Angle of deviation(d) = Angle of incidence(i) + Angle of emergence(e) - Angle of prism(A) 
It is clear from the equation angle of deviation increases with increase in the angle of incidence.
The derivation of this formula is in the image



2.  Analysing by drawing figure: it is difficult to observe it in diagrams because they are not accurate while drawing.