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Grade 10Modern Physics

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

Profile image of Navjyot Kalra
12 Years agoGrade 10
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1 Answer

Profile image of Aditi Chauhan
12 Years ago

(a)

Power proportional to  No. of electrons emitted (N)

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