A Ray of Light, Which Is Traveling in Air, Is

Multiple Choice

A ray of light, which is traveling in air, is incident on a glass plate at a 45° angle. The angle of refraction in the glass

A) is less than 45°.
B) is greater than 45°.
C) is equal to 45°.
D) could be any of the above; it all depends on the index of refraction of glass.