In the 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

Question

In the 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, 1 . 8 V, 1 . 3 V, 0 . 5 V, 2 . 3 V

MARKS App · Accepted Answer

The stopping potential V s is related to the maximum kinetic energy of the emitted electron K max through the relation K m a x = e V s 0 . 5 e V = e V s or V s = 0 . 5 V

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