Question

Visible light photons do not show Compton effect because those:

• A. move very slowly
• B. have no momentum
• C. have very less mass
• D. have larger wavelength

Answer 1

The correct option is D have larger wavelength

For Compton effect to take place, the incident photon must have enough energy to knock off an electron from it's shell i.e. more than the binding energy of the electron and then have surplus energy left after that. But energy of a photon in visible spectrum, due to its large wavelength, is not high enough to cause a Compton shift, instead it shows photoelectric effect.