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A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2m then
(a) Number of electrons emitted is a quarter of the initial number
(b) Each emitted electron carries one quarter of the initial energy
(c) Number of electrons emitted is half the initial number
(d) Each emitted electron carries half the initial energy
(a)
Power proportional to No. of electrons emitted (N)
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