Fact 1: Arainbow is formed by refraction of light by separating light into all different colors.

Fact 2: Light rays come in through the lens.

Given the two facts above, answer the question "A rainbow is formed by what of rays?" with the following options: 
- an electron microscope
 - energy of moving objects
 - heat energy
 - Solar energy
 - rain or sun shine
 - separation of colors
 - sun's heat
 - flow of electrons


 

      separation of colors   