Dual Nature of Radiation and Matter

Question: 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



1) Decrease by a factor of 2
2) Increase by a factor of 2
3) Decrease by a factor of 4
4) Increase by a factor of 4
Solution: Explanation: No Explanation
Photon and Photoelectric Effect

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