In a photocell circuit,the stopping potential $V_0$ is a measure of the maximum kinetic energy of the photoelectrons. The following graph shows experimentally measured values of stopping potential versus frequency $\nu$ of incident light. The values of Planck's constant and the work function as determined from the graph are (taking the magnitude of electronic charge to be $e = 1.6 \times 10^{-19} \, C$):

• A
  $6.4 \times 10^{-34} \, Js, 2.0 \, eV$
• B
  $6.0 \times 10^{-34} \, Js, 2.0 \, eV$
• C
  $6.4 \times 10^{-34} \, Js, 3.2 \, eV$
• D
  $6.0 \times 10^{-34} \, Js, 3.2 \, eV$