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
Verified Correct Answer: C.
Physical Principles & Numerical Solution
Work function = Total energy - kinetic Energy
= 6.88 - 1.50 = 5.38 ev
Source: Myschool Past Questions Archive (Record #24169)