Question

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 $0.6$V and $18$ mA. If the same source is placed $0.6$m away from the cell, then?

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

Answer 1

Answer: (A), (D)

The correct options are
A The stopping potential will be $0.2$V
D The saturation current will be $2.0$ mA