A) \[\frac{64}{125}\]
B) \[\sqrt{\frac{64}{125}}\]
C) \[\frac{5}{4}\]
D) \[\frac{4}{5}\]
Correct Answer: D
Solution :
\[r={{r}_{0}}{{(A)}^{1/3}}\] \[\therefore \] \[\frac{{{r}_{1}}}{{{r}_{2}}}={{\left( \frac{{{A}_{1}}}{{{A}_{2}}} \right)}^{1/3}}\] \[={{\left( \frac{64}{125} \right)}^{1/3}}\] \[={{\left[ {{\left( \frac{4}{5} \right)}^{3}} \right]}^{1/3}}=\frac{4}{5}\]
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