Question

which statement is true for light passing into a medium that is more optically dense than the first medium through which it passed?

the index of reflection of the second medium is lower.

the index of refraction of the second medium is lower.

the index of reflection of the second medium is higher.

the index of refraction of the second medium is higher.

Explanation:

Optical density of a medium is directly related to its refractive index; a more optically dense medium has a higher refractive index. The question refers to refraction (light passing between media), not reflection, so reflection index options are irrelevant.

Answer:

The index of refraction of the second medium is higher.