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

Question

Quizplus · Accepted Answer

The energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength. Blue light has a shorter wavelength (and higher frequency) than red, yellow, and green light, which means photons of blue light carry more energy.

A Beam of Light of Which of These Pure Colors