Studied by 3 people
Define the photon
A quantum of energy of electromagnetic radiation
What is the photoelectric Effect
An interaction between a photon and an electron in a metal, in which the electron is removed from the surface of the metal.
Define the work function
The minimum energy needed by an electron to free itself from the surface of a metal. Work function is a property of the metal.
Define the De Broglie Wavelength
The wavelength associated with a moving particle
Explain why the maximum kinetic energy of the electron emitted from a metal surface is independent of the intensity of the incident electromagnetic radiation. [3 marks]
The frequency of a photon determines its energy.
The intensity of light determines the number of photons per unit time.
The intensity of light does not determine the energy of a photon.
The kinetic energy of an electron depends on the energy of one photon.
