A photocell is illuminated by a small bright source placed 1 m
away. When the same source of light is placed 2 m away, the
number of electrons emitted by photocathode are reduced by
a factor of
(a) 1/8 (b) 1/16 (c) 1/2 (d) 1/4
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Answer:
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Answered by
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Answer:
(a)
Explanation:
I have no time so I can't explain that question.
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