Question

what happens if the photocell is moved away from the source (bulb)?

Answer 1

The answer quality is too much high

A source of light is placed at a distance from a photocell and cut off potential is If the distance of the same source from the photocell is doubled, then cut of potential

Answer 2

If the photocell is moved away from the source or bulb, the intensity of incident light decreases. So with decreasing intensity of incident light photoelectric current also decrease.