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  • When a monochromatic point source of light is at a distance of 0.2 m from a photoelectric cell, the cut-off voltage and saturation current are respectively 0.6 V and 18.0 mA. If the same source pla

When a monochromatic point source of light is at a distance of 0.2 m from a photoelectric cell, the cut-off voltage and saturation current are respectively 0.6 V and 18.0 mA. If the same source placed 0.6 m away from the photoelectric cell, then
 

Option: 1

The stopping potential will be 0.2 V
 


Option: 2

The stopping potential will be 0.6 V
 


Option: 3

The saturation current will be 2.0 mA
 


Option: 4

Both (2) and (3)


Answers (1)

best_answer

Answer (4)

Stopping potential remains same as frequency remains same. Saturation current is directly proportional to intensity of light i.e. i\; \alpha I\; \alpha \frac{1}{r^{2}}.

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Nehul

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