A) \[\text{I=}\frac{{{\text{I}}_{\text{0}}}}{\text{3}}\]
B) \[\text{I=}\frac{{{\text{I}}_{\text{0}}}}{9}\]
C) \[\text{I=}{{\text{I}}_{\text{0}}}\]
D) \[\text{I=9}{{\text{I}}_{\text{0}}}\]
Correct Answer: D
Solution :
Intensity \[I\propto \frac{1}{{{r}^{2}}}\] If distance (r) is made one third, then intensity will become 9 times than the initial intensity.You need to login to perform this action.
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