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When an inert gas is filled in the place...

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

A

photoelectric current remains the same

B

decrease or increase in photoelectric current does not depend upon the gas filled

C

photoelectric current is increased

D

photoelectric current is decreased

Text Solution

Verified by Experts

The correct Answer is:
C
When the photocell is filled with an inert gas, the photoelectrons emitted by the cathode, ionise the gas by collision and hence there is an increase in photoelectric current.
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MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
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