A) Number of electrons emitted is half the initial number
B) Each emitted electron carries half the initial energy
C) Number of electrons emitted is a quarter of the initial number
D) Each emitted electron carries one quarter of the initial energy
Correct Answer: C
Solution :
Number of electrons emitted \[\propto \] intensity \[\propto \]\[\frac{1}{{{(\text{distance})}^{2}}}\] \[\Rightarrow \frac{{{n}_{1}}}{{{n}_{2}}}={{\left( \frac{{{d}_{2}}}{{{d}_{1}}} \right)}^{2}}=\left( \frac{2}{1} \right)=4\] \[\Rightarrow \,{{n}_{2}}=\frac{{{n}_{1}}}{4}\]
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