The colors of the visible spectrum are blue, green, orange, red, violet, and yellow. Of these colors, _______ has the longest wavelength.
A) Red
B) Yellow
C) Green
D) Indigo
E) Violet

Question

Quizplus · Accepted Answer

Red has the longest wavelength among the colors of the visible spectrum, with a wavelength of about 700 nanometers. The colors with shorter wavelengths are orange, yellow, green, blue, and violet, in that order.

The Colors of the Visible Spectrum Are Blue, Green, Orange