Optical Phenomena Flashcards
(5 cards)
1
Q
What is the 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
What is Threshold frequency?
A
The minimum frequency of light needed to emit electrons from a certain metal surface.
3
Q
What is Work Function?
A
The minimum energy that an electron in the metal needs to be emitted from the metal surface.
4
Q
What is Atomic absorption spectrum?
A
Formed when certain frequencies of electromagnetic radiation passing through a substance is absorbed.
5
Q
What is Atomic Emission Spectrum?
A
Formed when certain frequencies of electromagnetic radiation are emitted due to an atom making a transition from a higher energy state to a lower energy state.
