A light ray travels from air into a sheet of glass and then emerges from the opposite side, as shown. Which two angles are equal to one another?
- Aangle of incidence at boundary 1 and angle of incidence at boundary 2
- Bangle of incidence at boundary 1 and angle of refraction at boundary 1
- Cangle of incidence at boundary 1 and angle of refraction at boundary 2
- Dangle of refraction at boundary 1 and angle of refraction at boundary 2