When light in air or a vacuum enters the plane surface of a dense,transparent medium at an angle to the perpendicular to this surface,which way does the light ray bend?
A) The light ray bends away from the perpendicular.
B) The light ray does not bend at all because the material is transparent.
C) The light ray bends toward the perpendicular.
D) The light ray bends so that, whatever the incoming angle, the light always travels along the perpendicular to the surface.

Question

Quizplus · Accepted Answer

The light ray bends toward the perpendicular when it enters a dense, transparent medium at an angle to the perpendicular to the surface. This phenomenon is called refraction. The amount of bending depends on the angle of incidence and the refractive index of the medium.

When Light in Air or a Vacuum Enters the Plane