When a monochromatic point source of light is at a distance of from a photoelectric cell

PHYSICS · Multi correct · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter

Problem

When a monochromatic point source of light is at a distance of

0.2\text{ m}

from a photoelectric cell, the stopping potential and saturation current are respectively

0.6\text{ V}

and

18.0\text{ mA}

. If the same source is placed

0.6\text{ m}

away from the photoelectric cell, then (1) The stopping potential will be

0.2\text{ V}

. (2) The stopping potential will be

0.6\text{ V}

. (3) The saturation current will be

6.0\text{ mA}

. (4) The saturation current will be

2.0\text{ mA}