Photoelectric EffectEasy
Question
In photoelectric emission process from a metal of workfunction 1.8 eV, the kinetic energymost energetic electron is 0.5 eV. The corresponding stopping potentail is
Options
A.1.8 V
B.1.3 V
C.0.5 V
D.2.3 V
Solution
The stopping potential Vs is related to the maximum kinetic energy of the emitted electrons Kmax through the relation
Kmax = eVs
0.5 eV = eVs or Vs = 0.5V
Kmax = eVs
0.5 eV = eVs or Vs = 0.5V
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