If two photons in a vacuum have different energies, what can be said about the wavelengths of the photons?
A) The higher-energy photon has the shorter wavelength.
B) The higher-energy photon has the longer wavelength.
C) The two photons have the same wavelength; all photons have the same wavelength, regardless of energy.
D) We cannot say anything; wavelength depends only on color, not on energy.

Question

Quizplus · Accepted Answer

The energy of a photon is inversely proportional to its wavelength, according to the equation E = hc/λ, where E is energy, h is Planck's constant, c is the speed of light, and λ is the wavelength. Therefore, a higher-energy photon will have a shorter wavelength.

If Two Photons in a Vacuum Have Different Energies, What