question

define the terms (a) threshold frequency, and (b) stopping potential. how were these terms incorporated in einstein’s photoelectric equation ?

 

 

 

 

 

 

(a) threshold frequency= the minimum frequency that's required for emission of electrons from a metal surface when electromagnetic radiation falls on the metal surface

b) stopping potential

it is the necessary potential applied externally to prevent the most energetic electron from reaching the endplate.

eienstiens photoelectric equation