The photoelectric threshold wavelength of Tungsten is $2300\; \mathring{A}$. The kinetic energy of the electrons ejected from the surface by ultraviolet light of wavelength $1800\; \mathring{A}$ is $.............\,eV$.

  • A
    $0.15$
  • B
    $1.5$
  • C
    $15$
  • D
    $150$

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