A photocell is illuminated by a small bright source placed 1 m away. W – McqOptions

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1.	A photocell is illuminated by a small bright source placed 1 m away. When the same source of light is placed two meters away, the electrons emitted by the photocathode _____.
A.	each carry one quarter of their previous energy
B.	each carry one quarter of their previous moments
C.	are half as numerous
D.	are one-quarter as numerous
Answer» E.

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