A metal is illuminated with a radiation of energy 6.88eV If the kinetic energy of...
PHYSICS
WAEC 1990
A metal is illuminated with a radiation of energy 6.88eV If the kinetic energy of the emitted electrons is 1.5OeV, calculate the work function of the metal.
- A. 0.22eV
- B. 4.59eV
- C. 5.38eV
- D. 8.38eV
Correct Answer: C. 5.38eV
Explanation
Work function = Total energy - kinetic Energy = 6.88 - 1.50 = 5.38 ev
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