Question

The refractive index of a substance varies with:
a. Its temperature.
b. The wavelength of the light passing through it.
c. The color of the light passing through it.
d. All of the above

Answer 1

Answer:

The wavelength of the light passing through it. (Ans B).

Explanation:

The refractive index of a substance is defined as the ratio of the speed of the light present in the vacuum to the speed in the medium. Refractive index of a substance is called as a dimensionless number that helps to describe how fast light will travel through the substance. It is described as:

N = C/V,

Where C is known for the speed of the light in vacuum, and V is known as the phase velocity of light which is found in medium.

Answer 2

The answer is B.) the wavelength of the light passing through it.