Einstein's Photoelectric Equation — MCQ Practice

Light of frequency $1.0 \times 10^{15},\text{Hz}$ is incident on a metal surface with a work function of $3.125\,\text{eV}$. Given Planck's constant $h = 6.63 \times 10^{-34},\text{J}\cdot\text{s}$ and $1\,\text{eV} = 1.6 \times 10^{-19},\text{J}$, what is the maximum kinetic energy of the emitted photoelectrons?

A metal surface has a work function of $2.0\,\text{eV}$. What is the threshold wavelength for photoelectric emission from this surface? (Given: $h = 6.63 \times 10^{-34},\text{J}\cdot\text{s}$, $c = 3 \times 10^8\,\text{m/s}$, $1\,\text{eV} = 1.6 \times 10^{-19},\text{J}$)

When light of frequency $\nu_1$ is incident on a metal, the stopping potential is $V_1$. When light of frequency $\nu_2$ is incident on the same metal, the stopping potential is $V_2$. Which of the following expressions correctly relates these quantities?

Which of the following graphs correctly represents the variation of maximum kinetic energy ($K_{max}$) of photoelectrons with the frequency ($\nu$) of incident light?

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

The work function of a metal is $3.0\,\text{eV}$. If light of wavelength $300\,\text{nm}$ is incident on it, what will be the stopping potential? (Given: $hc = 1240\,\text{eV}\cdot\text{nm}$)

A graph of stopping potential ($V_0$) versus frequency ($\nu$) for the photoelectric effect from two different metals, P and Q, is shown. If the graph for metal P has a higher y-intercept (more negative) than metal Q, what can be inferred about their work functions and threshold frequencies?