A slab of plastic rests on a slab of glass.A ray of light in the plastic crosses the interface between the plastic and the glass with the result that the ray bends toward the normal.What must be true about the indices of refraction in these materials? A)n_plastic n_glass B)n_plastic

Question

A slab of plastic rests on a slab of glass.A ray of light in the plastic crosses the interface between the plastic and the glass with the result that the ray bends toward the normal.What must be true about the indices of refraction in these materials? A)n_plastic > n_glass B)n_plastic < n_glass C)n_plastic = n_glass D)More information is needed to decide the answer.

Quizplus · Accepted Answer

The ray of light bends toward the normal when it crosses the interface from plastic to glass. This means that the ray is passing from a material with a lower index of refraction (plastic) to a material with a higher index of refraction (glass). Therefore, n_plastic < n_glass.

A Slab of Plastic Rests on a Slab of Glass