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  • Light of wavelength falls on a metal having photoelectric work function <img alt="2eV" src="https://entranc

Light of wavelength 6200 \AA falls on a metal having photoelectric work function 2eV. What is the value of stopping potential ?

Option: 1

0 V


Option: 2

2 V


Option: 3

3 V


Option: 4

1.2 heV


Answers (1)

best_answer

Energy corresponding to 6200 \AA=\frac{12375}{6200} \mathrm{eV}=1.996 \mathrm{eV}=2 \mathrm{eV}
Clearly, the electron is emitted with zero kinetic energy. So, the stopping potential is zero.

Posted by

Pankaj Sanodiya

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