Nature Of Light Flashcards
1
Q
Radiation flux/ intensity
A
Amount of power transferred per unit area
2
Q
Luminosity
A
Rate of which energy is radiated by an object
3
Q
Electronvolt
A
Energy change of an electron when it moves through a potential difference of one volt
4
Q
Work function
A
Minimum energy required to release an electron from the surface of a metal
5
Q
Threshold frequency
A
Lowest frequency of radiation that will result in the emission of electrons from a particular metal surface
6
Q
Photon
A
A particle representing a packet of EM radiation
7
Q
Energy levels
A
Discrete,allowed energy level where an atom/e- can reside at
