When an inert gas is filled in the place of vacuum in a photo cell,then

  • A
    Photo-electric current is decreased
  • B
    Photo-electric current is increased
  • C
    Photo-electric current remains the same
  • D
    Decrease or increase in photo-electric current does not depend upon the gas filled

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Monochromatic light with a frequency well above the cutoff frequency is incident on the emitter in a photoelectric effect apparatus. The frequency of the light is then doubled while the intensity is kept constant. How does this affect the photoelectric current?

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$(A)$ Reflection
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