Sarah is in charge of lighting for a school play, and she must find the right "gel," or color filter, to produce a light with a wavelength of about 680 nm. When used on stage, the light will look
A) violet.
B) green.
C) yellow.
D) red.

Question

Quizplus · Accepted Answer

A wavelength of about 680 nm corresponds to the color red. Therefore, Sarah should choose a red gel to produce this color of light on stage.

Sarah Is in Charge of Lighting for a School Play