When light passes from a material with a low index of refraction into material with a high index of refraction:
A) some light is reflected with a 180° change of phase.
B) none of the light is reflected.
C) some light is reflected without a change of phase.
D) the light that is not reflected has a 180° change of phase.

Question

Quizplus · Accepted Answer

When light passes from a material with a low index of refraction into a material with a high index of refraction, some light is reflected with a 180° change of phase. This is known as a phase inversion or a reflection with a π phase shift.

When Light Passes from a Material with a Low Index