A light of energy 5eV falls on a metal and the electrons with a maximum...
PHYSICS
JAMB 1995
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: C. 3.0eV
Explanation
Work function = 5 - 2 = 3eV
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