A) each emitted electron carries half the initial energy
B) number of electrons emitted is a quarter of the initial number
C) each emitted electron carries one quarter of the initial energy
D) number of electrons emitted is half the initial number
Correct Answer: B
Solution :
Key Idea: Number of photoelectrons emitted per second is directly proportional to intensity of light. Intensity of light source is \[I\,\,\propto \,\,\frac{1}{{{d}^{2}}}\] When distance is doubled, intensity becomes one fourth. As number of photoelectrons \[\propto \] intensity, so number of photoelectrons is quarter of the initial number.
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