Modern Physics 2 Question 20
19. The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy $6 eV$ fall on it is $4 eV$. The stopping potential in volt is
(1997, 1M)
(a) 2
(b) 4
(c) 6
(d) 10
Objective Questions II (One or more correct option)
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Solution:
- Stopping potential is the negative potential applied to stop the electrons having maximum kinetic energy. Therefore, stopping potential will be $4 V$.
