Question

The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon

• A. Wavelength
• B. Frequency
• C. Intensity
• D. Work function

Answer 1

The correct option is C Intensity

Maximum kinetic energy of the photoelectrons emitted $K.E_{max}=h\nu -\varphi$

where $\varphi$ is the work function of the metal, $\nu$ is the frequency of the incident photon.

Wavelength of the incident photon $\lambda =\frac{c}{\nu }$

Thus kinetic energy of the emitted photoelectrons depends on wavelength, frequency of the incident photon and work function of the metal but does not depend on the intensity.