Quantum Flashcards
What is the photoelectric equation?
hf=ф+KEmax
Definition of threshold frequency
The minimum frequency of electromagnetic radiation that would cause the emission of an electron
Definition of hf
Energy of a photon in Joules
Definition of KEmax
The maximum kinetic energy of an electron in Joules
Definition of ф
Minimum energy required to cause the emission of an electron from a metal surface
How does the intensity of the light affect the Kinetic Energy of the electrons
It doesn’t as intensity only affects the rate at which photons are emitted, the actual interaction of photons and electrons occurs on a one to one basis
Definition of 1eV
1 electron volt is 1.6x10^-19
- An electron volt is the energy acquired by an electron when accelerated through a p.d. of 1 volt
Short definition of the photoelectric effect
The photoelectric effect is the emission of electrons from a metal when light is shone on the surface
State de Broglie’s equation
λ=h/p or λ=h/mv
