Chapter 27 - Quantum Physics - Learning Path Questions and Exercises - Conceptual Questions - Page 935: 16

Stopping voltage will be V_{o}.

Stopping voltage V_{o} is a measure of maximum kinetic energy (K_{max}) of the photo-electron. The relation between them is given by K_{max} = eV_{o} Kinetic energy of the photo-electron depends on the frequency of the incident light and not on the intensity of the light. So increasing the intensity of the light by three times will not change the stopping voltage V_{o}