A monochromatic beam of light of wavelength $400\,nm$ incident normally upon a photosensitive surface ($25\%$ reflects and rest absorbs), produces a pressure of $5 \times 10^{-7}\,Nm^{-2}$ on it. If $0.1\%$ of the incident photons produce electrons then corresponding saturation current will be..............$\mu A$ (consider area of photosensitive surface $= 5\,cm^2$)

  • A

    $0.48$

  • B

    $9.6$

  • C

    $19.2$

  • D

    $12$

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A photon of $1.7 \times {10^{ - 13}}$ Joules is absorbed by a material under special circumstances. The correct statement is

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