Photoelectric emission takes place from a certain metal at threshold frequency $\nu$. If the radiation of frequency $2\nu$ is incident on the metal plate, the maximum velocity of the emitted photoelectron will be ($m = \text{mass of electron}$, $h = \text{Planck's constant}$)

  • A
    $\sqrt{\frac{2h\nu}{m}}$
  • B
    $\sqrt{\frac{h\nu}{2m}}$
  • C
    $\sqrt{\frac{h\nu}{3m}}$
  • D
    $\sqrt{\frac{h\nu}{m}}$

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