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

Options

A. The stopping potential will be `0.2V`
B. the stopping potential will be `0.6V`
C. The saturation current will be `6.0 mA`
D. The saturation current will be `2.0 mA`

Answer

B, D

Explanation

Stopping potential remains same as frequency remains the same.Saturation current is directly proportional to intensity of light i.e.`I prop I prop 1/r^(2)`