Question : The work-function of a metal is
A. the minimum current required to take out electron from the metal surface
B. the maximum frequency required to take out electron from the metal surface
C. the minimum amount of energy required to take out the electron from the metal surface
D. None of these
Answer:C
Question : The work-function of a metal is
A. the minimum current required to take out electron from the metal surface B. the maximum frequency required to take out electron from the metal surface C. the minimum amount of energy required to take out the electron from the metal surface D. None of these