wave particle duality Flashcards
1
Q
What is the photoelectric effect evidence for?
A
the particle model of light
2
Q
What can photons do when they have sufficient energy?
A
eject electrons from the surface of materials (photo emission)
3
Q
What is the equation involving the frequency and energy of a photon?
A
E=hf
4
Q
What is the threshold frequency?
A
the minimum frequency of a photon needed for photo emission
5
Q
What is the work function of a material?
A
the minimum energy of a photon required to cause photo emission
6
Q
What is the symbol for threshold frequency?
A
hfo
7
Q
What can be concluded from the gold leaf experiment?
A
- only UV light has an effect
- only negatively charged electroscopes can discharge
- effect is only apparent in some materials
