AIPMT PRELIMS2011Physics-Modern Physics
AIPMT PRELIMS 2011 Physics Photoelectric Effect MCQ Question
Type: MCQ-conceptual-Medium-Class 12
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
A
2.3 V
B
1.8 V
C
1.3 V
D
0.5 V
Correct Answer
Option D
Detailed Explanation
The stopping potential is given by eV = KE_max. Here, KE_max is 0.5 eV, so the stopping potential is 0.5 V.
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