The adjacent diagram shows two right-angled isosceles prisms A and B. Complete the diagram to … principles have you used to complete…
The completed ray diagram is shown in figure.
Following two principles are used to complete the diagram:
(1) A ray of light incident normally on the interface of two media passes undeviated.
(2) A ray of light striking the interface of two media (glass and air) from glass, at an angle of incidence, equal to 45° (which is greater than the critical angle = 42°) suffers total internal reflection.