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In photoelectric emission process from a metal of work function

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

Options

(a) 1.8 V
(b) 1.2 V
(c) 0.5 V
(d) 2.3 V

Correct Answer:

0.5 V

Explanation:

The stopping potential is equal to maximum kinetic theory.

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