Question

A monochromatic light is used in a photoelectric experiment on photoelectric effect. The stopping potential:

• A. is related to the mean wavelength
• B. is related to the shortest wavelength
• C. is related to the maximum kinetic energy of emitted photoelectrons
• D. intensity of incident light

Answer 1

Answer: (B), (C)

The correct options are
B is related to the maximum kinetic energy of emitted photoelectrons
C is related to the shortest wavelength

Stopping potential is given by:
$V_0=\frac{K}{e}=\frac{1}{e}(\frac{hc}{\lambda }-\varphi )$
where $K$ is the maximum kinetic energy and $\varphi$ which is the work function depends on the shortest wavelength that can generate photoelectric effect. Hence, option B and C are correct.