The number of photons per second on an average emitted by the source of monochromatic light of wavelength $600\, \mathrm{~nm}$, when it delivers the power of $3.3 \times 10^{-3}$ $watt$ will be : $\left(\mathrm{h}=6.6 \times 10^{-34}\, \mathrm{Js}\right)$

  • [NEET 2021]
  • A

    $10^{18}$

  • B

    $10^{17}$

  • C

    $10^{16}$

  • D

    $10^{15}$

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