The minimum film thickness for which a reflection maximum occurs is the same in all of the following situations except
A) when the film is surrounded by a material of larger index of refraction.
B) when the film is surrounded by a material of smaller index of refraction.
C) when the film is bordered by a material of larger index of refraction on one side and a material of smaller index of refraction on the other side.
D) Hold it! There are no exceptions.

Question

Quizplus · Accepted Answer

When the film is bordered by materials of different refractive indices on each side, the conditions for constructive interference change, leading to a different minimum film thickness for a reflection maximum.

The Minimum Film Thickness for Which a Reflection Maximum Occurs