A ray of light travelling in air enters a glass slab. Which of the following statements is/are correct?
(i) Angle of incidence is greater than the angle of refraction.
(ii) Angle of incidence is equal to angle of emergence.
(iii) The emergent ray is parallel to the incident ray.
1
Both (i) and (ii)
2
Both (ii) and (iii)
3
(i), (ii) and (iii)
4
Both (i) and (iii)