A dichroic mirror is used for which of the following tasks in a projector?

a. Combines red, green, and blue light.
b. Used as part of the DLP chip
c. Separates red, green, and blue light.
d. Reflects heat away from the projection lamp.

C. A dichroic combiner cube combines red, green, and blue light. A DLP chip has micromirrors. The projector lamp is cooled by a fan.