A) \[2.12\overset{\text{o}}{\mathop{\text{A}}}\,\]
B) \[4.77\overset{\text{o}}{\mathop{\text{A}}}\,\]
C) \[1.06\overset{\text{o}}{\mathop{\text{A}}}\,\]
D) \[1.59\overset{\text{o}}{\mathop{\text{A}}}\,\]
E) \[0.18\overset{\text{o}}{\mathop{\text{A}}}\,\]
Correct Answer: B
Solution :
\[{{r}_{n}}\propto {{n}^{2}}\Rightarrow \frac{{{r}_{1}}}{{{r}_{2}}}=\frac{{{1}^{2}}}{{{3}^{2}}}\] \[\Rightarrow \,{{r}_{2}}=9{{r}_{1}}=9\times 0.53=4.77\overset{\text{o}}{\mathop{\text{A}}}\,\]
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