OPTICAL PHENOMENA & PROPERTIES OF MATERIALS Flashcards
1
Q
Describe the photoelectric effect
A
as the process whereby electrons are ejected from a
metal surface when light of suitable frequency is incident on that surface
2
Q
Define threshold frequency
A
the minimum frequency of light needed to emit
electrons from a certain metal surface.
3
Q
Define work function
A
as the minimum energy that an electron in the metal needs to
be emitted from the metal surface
4
Q
A
