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  • In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of the most energetic electrons is 0.5 eV. The corresponding stopping potential is:<div class='qna-opt

In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of the most energetic electrons is 0.5 eV. The corresponding stopping potential is:

Option: 1

2.3 V


Option: 2

1.8 V


Option: 3

1.3 V


Option: 4

0.5 V


Answers (1)

best_answer

\\ Let\ V_{0}$ be the stopping potential \\ In photoelectric effect, the maximum kinetic energy of electron, \\ $K_{\max }=e V_{0}$ \\ $\mathrm{so}, V_{0}=\frac{K_{\max }}{e}=\frac{0.5 \mathrm{eV}}{e}=0.5 \mathrm{V} \quad $

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Rishi

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