Question

Which statement best describes the relationship between an object's density and its index of refraction?

A. As the mass per unit volume of the substance increases, the refractive index decreases.

B. As the mass of the object increases, the refractive index decreases.

C. As the physical density of the substance increases, the refractive index increases

D. As the optical density increases, the refractive index increases​

Answer 1

Answer: the answer is D

Explanation: I took the test

Answer 2

D. As the optical density increases, the refractive index increases