When light is reflected from a surface it can be either regular reflection or diffuse reflection. The essential difference between regularly and diffusely reflecting surfaces is that

Options

A. regularly reflecting surfaces are smoother than diffusely reflecting surfaces
B. light can not be reflected from a diffusely reflecting surface
C. the regularly reflecting surface is coarser than the diffusely reflecting surface
D. all of the above are essential differences between regularly and diffusely reflecting surfaces.

Answer

A

Explanation

The smoother the surface, the more regularly reflecting the surface is. Mirrors are smooth enough that they reflect in a regular fashion