Modern Physics Ques 82
- 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) $10$
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Answer:
Correct Answer: 82.(b)
Solution:
Formula:
- Stopping potential is the negative potential applied to stop the electrons having maximum kinetic energy. Therefore, stopping potential will be $4 V$.
BETA
