A light of energy 5eV falls on a metal and the electrons with a maximum kinetic energy of 2eV are ejected. The work function of the metal is
-
A.
0.4eV -
B.
2.5eV -
C.
3.0eV -
D.
7.0eV
Correct Answer: Option C
Explanation
Work function = 5 – 2
= 3eV
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