When a point source of light is at a distance of 50 cm from a photoelectric cell, the cut off voltage is found to be V0. If the same source is placed at a distance of 1 m from the cell, the cut off voltage will be

When a point source of light is at a distance of 50 cm from a photoele

1.	When a point source of light is at a distance of 50 cm from a photoelectric cell, the cut off voltage is found to be V0. If the same source is placed at a distance of 1 m from the cell, the cut off voltage will be
Answer» When a point source of light is at a distance of 50 cm from a photoelectric cell, the cut off voltage is found to be $V_{0}$ . If the same source is placed at a distance of 1 m from the cell, the cut off voltage will be