Photoelectric Effect — MCQ Practice

Light of frequency $1.0 \times 10^{15}\,\text{Hz}$ is incident on a photosensitive metal plate. If the work function of the metal is $2.5\,\text{eV}$, what is the maximum kinetic energy of the emitted photoelectrons? (Given: Planck's constant $h = 6.63 \times 10^{-34}\,\text{J\cdot s}$, $1\,\text{eV} = 1.6 \times 10^{-19}\,\text{J}$)

A graph of stopping potential ($V_0$) versus frequency ($\nu$) for a photoelectric effect experiment is shown. The slope of this graph is:

Which of the following statements is INCORRECT regarding the photoelectric effect?

Monochromatic light of wavelength $400\,\text{nm}$ is incident on a metal surface with a work function of $2.1\,\text{eV}$. What is the stopping potential required to stop the photoelectrons? (Given: $hc = 1240\,\text{eV\cdot nm}$)

When the intensity of light incident on a photosensitive surface is increased, which of the following changes?

A metal surface has a work function of $3.0\,\text{eV}$. If light of wavelength $310\,\text{nm}$ is incident on it, what will be the threshold wavelength for this metal? (Given: $hc = 1240\,\text{eV\cdot nm}$)

In a photoelectric experiment, if the frequency of incident radiation is doubled, what happens to the stopping potential?