Question

if you are in a room that has only one wavelength of red light illuminating it, and then looked at your dvds surface, what color(s) would you see coming from the dvd?
o all visible colors
o just red
o just green
o all visible colors except green

Explanation:

The color of an object is determined by the wavelengths of light it reflects. If only red - wavelength light illuminates the DVD, the DVD will reflect red light and appear red. Other colors in the visible spectrum are not present in the illuminating light, so they cannot be seen.

Answer:

just red