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 \[\frac{1}{2}m\] away, the number of electrons emitted by photo cathode would [CBSE PMT 2001; AIEEE 2005]
A.	Decrease by a factor of 2
B.	Increase by a factor of 2
C.	Decrease by a factor of 4
D.	Increase by a factor of 4
Answer» E.

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