What type of energy waves are used in solar cells, and what is it’s position on the electromagnetic spectrum?

Electromagnetic waves (Ultraviolet light, between 100 nm and 380 nm)

Explanation:

Solar cells work by the photoelectric effect, which consists of the emission of electrons (electric current) when light (electromagnetic waves) falls on a metal surface under certain conditions.  

In this sense, the portion of the electromagnetic spectrum this cells use is Ultraviolet light (UV) from the Sun, whose wavelength is approximately between 100 nm and 380 nm.

It is important to note, this is a type of electromagnetic radiation that is not visible to the human eye.

the answer would be c. motion and direction

i hope this : )

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.