Question

The energy of the most energetic photoelectrons emitted from a metal target depends upon

• A. Threshold frequency of the metal
• B. Intensity of the incident radiation
• C. Photoelectric work function of the metal
• D. Wave length of the incident radiation

Answer 1

Answer: (A), (C), (D)

The correct options are
A Wave length of the incident radiation
C Threshold frequency of the metal
D Photoelectric work function of the metal

In a photoelectric effect, the maximum kinetic energy of the ejected electron is given by, $K_{max}=h\nu -W=\frac{hc}{\lambda }-W$

Where $\lambda$ is the wavelength of the incident photon, W is the work function of the metal.

Also work function, $W=h{\nu }_0$ where ${\nu }_0$ is the threshold frequency of the metal.

Thus, only option B is wrong.