Question
In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of most energetic electrons is 0.5 eV. The corresponding stopping potential is
-
1.3 V
-
0.5 V
-
2.3 V
-
1.8 V
Solution
B.
0.5 V
stopping potential = Maximum KE
eV = KEmax
