When a point source of light is at a distance of one metre from a photo cell , the cut off voltage is found to be `V`. If the same source is placed at `2 m` distance from photo cell , the cut off voltage will beA. When a point source is at a distance of one metre from a photo cell , the cut off voltage is found to be `V`. If the same source is placed at `2 m` distance from photo cell , the cut off voltage will beB. `V`C. `V//2`D. `V//4`

When a point source of light is at a distance of one metre from a phot

1.	When a point source of light is at a distance of one metre from a photo cell , the cut off voltage is found to be `V`. If the same source is placed at `2 m` distance from photo cell , the cut off voltage will beA. When a point source is at a distance of one metre from a photo cell , the cut off voltage is found to be `V`. If the same source is placed at `2 m` distance from photo cell , the cut off voltage will beB. `V`C. `V//2`D. `V//4`
Answer» Correct Answer - A By changing distance of source , photoelectric current changes . But there is no change in stopping potential.

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