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

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1.	A photo cell is illuminated by a small bright source placed 1m away. When the same source of light is placed 2m away, the electrons emitted by photo cathode
A.	carry one quarter of their previous energy
B.	carry one quarter of their previous momenta
C.	are half as numerous
D.	are one quarter as numerous
Answer» E.

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