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
E. 10.32eV

Correct Answer:

Option C = 5.38eV

Explanation

Work function = Total energy – kinetic Energy
= 6.88 – 1.50 = 5.38 ev