Question
13.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*,71* Angle of deviation:60*,50*,46*,40*,43*,50*, For what values of the angle of incidence ,is the angle of emergence likely to be equal to the angle of incidence itself?