Unpolarized light is incident on a plane glass surface. The angle of incidence (i) is so adjusted that the reflected and refracted rays are perpendicular to each other. What is the relationship between the angle of incidence and the angle of refraction?
1) The angle of incidence is equal to the angle of refraction
2) The angle of incidence is greater than the angle of refraction
3) The angle of incidence is less than the angle of refraction
4) The angle of incidence and the angle of refraction are unrelated