Question

In a photoelectric experiment, the stopping potential is 1.5V. What is the maximum kinetic energy of a photoelectron?

Hint:

The stopping potential is directly related to the maximum kinetic energy of photoelectrons in the photoelectric effect.

Answer 1

The maximum kinetic energy of a photoelectron is equal to the energy provided by the photon minus the work function of the material. The kinetic energy is given by:
\[ K.E. = eV = 1.5 \, {eV} \] where \( e \) is the charge of the electron and \( V \) is the stopping potential.