A point source of light is used in an experiment on photoelectric effect. Which of the following curves best represents the variation of photoelectric current 
with distance x of the source from the emitter?
Text Solution
Verified by ExpertsThe correct answer is:
D
As the distance of source from the surface increases, intensity of radiation decreases.
Intensity 
and
Since, photoelectric current 
intensity 
Thus, the variation of i versus 
is correctly depicted by the curve d in the given figure.
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