Question

in the given diagram identify the angle of incidence and angle of deviation What is the relation
between angle of incidence and angle of emergence?​

Answer 1

Angle of deviation = angle Q (well I think it is Q but pls check as your image is very blurry)

Angle of incidence = angle opposite to angle S, apparently, which has just been cut off from the image

Relation is:

Angle of incidence = angle of emergence

Hope I helped (Sorry but your image didn't)