A light of energy 5eV falls on a metal and the ... - JAMB Physics 1995 Question
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
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Correct Option: C
Work function = 5 - 2
= 3eV
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