Total internal reflection may occur when light meets an air-glass boundary. Under what conditions is the light totally internally reflected?
- Amedium in which light travels towards the boundary: air; angle of incidence greater than the critical angle
- Bmedium in which light travels towards the boundary: air; angle of incidence less than the critical angle
- Cmedium in which light travels towards the boundary: glass; angle of incidence greater than the critical angle
- Dmedium in which light travels towards the boundary: glass; angle of incidence less than the critical angle