Photons Flashcards
1
Q
What is a photon
A
A quantum of energy of an electromagnetic wave
2
Q
Describe the photoelectric effect
A
A photon interacts with the surface electron of a metal. Energy is conserved during this interaction and if the energy of the photon is greater than or equal to the work function of the metal, the electron is removed from the surface. Intensity has no effect t in the kinetic clergy of the electron.
3
Q
Why does intensity not effect the kinetic energy of the electron released from the photoelectric effect.
A
KE (max) = hf - work function. Kinetic energy is independent of intensity but dependant in frequency.
