Photons of 5.5 eV energy fall on the surface of the metal emitting photoelectrons of maximum kinetic energy 4.0 eV. The stopping voltage required for these electrons is
A. 5.5 V
B. 1.5 V
C. 9.5 V
D. 4.0 V
Answer:D
Photons of 5.5 eV energy fall on the surface of the metal emitting photoelectrons of maximum kinetic energy 4.0 eV. The stopping voltage required for these electrons is
A. 5.5 V B. 1.5 V C. 9.5 V D. 4.0 V