When a photon of wavelength $3000 \ \mathring{A}$ is incident on a metal surface,the energy of the emitted electron is $0.5 \ eV$. If a photon of wavelength $2000 \ \mathring{A}$ is incident on the same metal surface,the energy of the emitted electron will be:

  • A
    $0.5 \ eV$
  • B
    greater than $0.5 \ eV$
  • C
    less than $0.5 \ eV$
  • D
    none of the above

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