A) 2
B) 3
C) 4
D) 5
Correct Answer: C
Solution :
\[\frac{{{T}_{A}}}{{{T}_{B}}}={{\left( \frac{{{r}_{A}}}{{{r}_{B}}} \right)}^{3/2}}\]\[\Rightarrow 8={{\left( \frac{{{r}_{A}}}{{{r}_{B}}} \right)}^{3/2}}\]\[\Rightarrow {{r}_{A}}={{(8)}^{2/3}}{{r}_{B}}\]\[=4{{r}_{B}}.\]
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