A) \[I=\frac{{{I}_{0}}}{3}\]
B) \[I=\frac{{{I}_{0}}}{9}\]
C) \[I={{I}_{0}}\]
D) \[I=9{{I}_{0}}\]
Correct Answer: D
Solution :
\[I\propto \frac{1}{{{r}^{2}}}\] \[\frac{I}{{{I}_{0}}}={{\left( \frac{r}{r/3} \right)}^{2}}\] \[I=9{{I}_{0}}\]You need to login to perform this action.
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