When a point source of flight is at a distance of one meter from a photo-cell, the cut off voltage is found to be 
. If the same source is placed at 2 
distance from photo-cell, the cut off voltage will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
By changing distance of source, photoelectric current changes. But there is no change in stopping potential.
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