Question

The extent to which a light ray bends in a medium, depends on the ________ of the medium.

• A. transparency
• B. colour
• C. elsticity
• D. refractive Index

Answer 1

Answer: (D)

refractive Index

In optics, the refractive index or index of refraction(n) of a material is a dimensionless number that describes how light propagates through that medium.

It is defined as: $n=\frac{c}{v}$

The refractive index determines how much light is bent, or refracted, when entering a material.