Question

Which of the following factors is responsible for the refraction of light?

• A. optical density
• B. frequency of light
• C. angle of incidence
• D. mass density

Answer 1

The correct option is A

optical density

1. The refraction is the bending of light as it propagates from one medium to another.
2. This bending is because of the difference in optical densities of the media.
3. Optical density is the property of material directly proportional to its refractive index.
4. Thus, the higher the optical density, the higher the refractive index and the velocity of light in the medium will be lower.
5. This will result in ray bending towards normal, i.e. refraction.

Therefore, the correct option is (A).