Photo - Electric Effect Flashcards
1
Q
Photoelectric effect
A
The process whereby electrons are ejected from a metal surface when light of a suitable frequency is incident on that surface.
2
Q
Threshold frequency
A
The minimum frequency of light needed to emit electrons from a certain metal surface.
3
Q
Work function
A
The minimum energy that an electron in the metal needs to be emitted from the metal surface
4
Q
Photons
A
The ‘packets of energy’ (quanta) of which light consists
5
Q
Light absorption
A
The type of spectrum formed when light is passed through a cold gas at low pressure .
