Physics (Hill) Quantum Flashcards
What does energy is quantised mean
It only exists in multiples of a small piece of
What is Planks constant
6.63x10^-3 Js
What is 1eV equal to
1.6x10^-19J
What is the photo electric effect
Some light would produce a current
What does the photoelectric effect depend on
Frequency of light
Minimum frequency needed threshold frequency
What light causes the photo electric effect and what light doesn’t
Blue light
Red light -doesn’t
What will happen if the frequency is below the threshold
No electrons will be emitted
What is true about the photoelectro effect emissions
Emission of the photoelectron is instantaneous
1 to 1 interaction
What is the work function
Each electron needed a specific amount of energy to escape the metal
What happens if the incident radiation is above threshold frequency
There will be a particle model for electromagnetic radiation
What does the energy of a photon depend on and what happens if it is less
It’s frequency E=hf
Frequency of each photon was below work function then electron couldn’t escape
