For the photoelectric effect,the maximum kinetic energy $E_k$ of the emitted photoelectrons is plotted against the frequency $\nu$ of the incident photons as shown in the figure. The slope of the curve gives

  • A
    Charge of the electron
  • B
    Work function of the metal
  • C
    Planck's constant
  • D
    Ratio of the Planck's constant to electronic charge

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