When a particular metal is illuminated with photons,one electron is observed for each absorbed photon.What effect would decreasing the wavelength and number of photons have on the electrons leaving the surface?
A)There would be more electrons leaving the surface.
B)They would have higher kinetic energy.
C)The electron velocity would be lower.
D)The kinetic energy of the electrons would be lower.
E)Two photons might be required to eject the electrons.

Question

Quizplus · Accepted Answer

The energy of a photon is directly proportional to its frequency (or inversely proportional to its wavelength). Therefore, decreasing the wavelength (increasing the frequency) of photons would increase the energy of each photon. This would result in electrons being ejected with higher kinetic energy. However, decreasing the number of photons would result in fewer electrons being ejected overall.

When a Particular Metal Is Illuminated with Photons,one Electron Is