Question:

1 ABCD is the outline of a glass cube A horizontal ray of

Last updated: 6/13/2023

1 ABCD is the outline of a glass cube A horizontal ray of

1 ABCD is the outline of a glass cube A horizontal ray of light enters the glass cube grazing the surface AB If the ray emerges from the face BC and the ray makes an angle a with the normal at the face BC prove that sina 0 critical angle of glass C cotoc C