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Physics Question on Photoelectric Effect

In photoelectric emission process from a metal of work function 1.8 eV,1.8 \,eV, the kinetic energy of most energetic electrons is 0.5 eV0.5 \,eV. The corresponding stopping potential is

A

1.3V

B

0.5V

C

2.3V

D

1.8V

Answer

0.5V

Explanation

Solution

Stopping potential == Maximum KEKE
eV=KEmax⁡eV = KE_{\max}