A beam of light of which of the following pure colors is made up of photons of the lowest energy?
A) red
B) yellow
C) green
D) blue

Question

Quizplus · Accepted Answer

Red has the longest wavelength and the lowest frequency compared to the other options. Since the energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength, red light photons have the lowest energy.

A Beam of Light of Which of the Following Pure