Aray of light bends upon entering a new medium. what is this phenomenon called? a.) diffused reflection b.) reflection c.) refraction d.) dispersion

The answer is C.) refraction

Explanation:

Refraction is the change in direction and speed that a wave experiences when passing from one medium to another with a different refractive index. When the light passes from one transparent medium to another there is a change in its direction due to the different speed of propagation that the light has in the different material media.

frequency or wavelenth of em radiation in a vacuum

a.   mass number from atomic number