The following table gives the values of the angle of deviation for different values of the angle of incidence for a triangular prism. Angle of incidence 33° 38° 42° 52° `60^o` 71° Angle of deviation O') `60^o` 50° 46° `40^o` 43° 50° (i) For what value of the angle of incidence, is the angle of emergence likely to be equal to the angle of incidence itself? (ii) Draw a ray diagram showing the passage of a ray of light through this prism when the angle of incidence has the above

Question

The following table gives the values of the angle of deviation for different values of the angle of incidence for a triangular prism.

Angle of incidence	33°	38°	42°	52°	`60^o`	71°
Angle of deviation O')	`60^o`	50°	46°	`40^o`	43°	50°

(i) For what value of the angle of incidence, is the angle of emergence likely to be equal to the angle of incidence itself?
(ii) Draw a ray diagram showing the passage of a ray of light through this prism when the angle of incidence has the above value.