Topic 3: Photoelectric Effect Flashcards
1
Q
What does the photoelectric effect state?
A
Matter emits electrons when light with high enough energy quanta shines on them
2
Q
What did the photoelectric effect prove?
A
It proved that light exists as a particle AND a wave
3
Q
What exactly happens in the photoelectric effect?
A
the entire energy of a photon is given to an electron, which raised the the electron to a high enough energy state to leave the atom to become a free electron
4
Q
What is a practical application of the photoelectric effect?
A
Use of photocathodes in x-rays. CT scans, PET scanners, etc.
