If one sends white light through a prism to produce a spectrum, and then sends this entire spectrum through a lens to recombine it, the result will be
A) red.
B) yellow.
C) white.
D) black (no light).

Question

Quizplus · Accepted Answer

When white light is passed through a prism, it disperses into its component colors (spectrum) due to different degrees of refraction for different wavelengths. If this entire spectrum is then passed through a lens, the lens recombines these colors, effectively reversing the dispersion process, and the result is white light again.

If One Sends White Light Through a Prism to Produce