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when a monochromatic point source of lig...

when a monochromatic point source of light is at a distance 0.2 m from a photoelectric cell, the saturation current and cut-off voltage are 12.0 mA and 0.5 V. If the same source is placed 0.4 m away from the photoelectric cell, then the saturation current and the stopping potential respectively are

A

4 mA and 1 V

B

12 mA and 1 V

C

3 mA and 0.5 V

D

12 mA and 0.5 V

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The correct Answer is:
C
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