Question

A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence (∠i). He then measures the corresponding values of the angle of refraction (∠r) and the angle of emergence (∠e) for every value of the angle of incidence. On analysing these measurements of angles, his conclusion would be
(A) ∠i > ∠r > ∠e
(B) ∠i = ∠e > ∠r
(C) ∠i < ∠r < ∠e
(D) ∠i = ∠e < ∠r

Answer 1

angle of incidence is equal to angle of emergence and angle of incidence is greater than angle of refraction also angle of refraction is less than angle emergence

hope it helps

Answer 2

angle of incidence is equal to angle of emergence.
angle of incidence is greater than angle of refraction..
angle of refraction is less than angle of emergence.