A) \[r\propto n\]
B) \[r\propto {{n}^{2}}\]
C) \[r\propto \frac{1}{n}\]
D) \[r\propto \frac{1}{{{n}^{2}}}\]
Correct Answer: B
Solution :
Bohr suggest a formulae to calculate the radius and energy of each orbit and gave the following formulae \[{{r}_{n}}=\frac{{{n}^{2}}{{h}^{2}}}{4{{\pi }^{2}}km{{e}^{4}}Z}\] Where except \[{{n}^{2}}\], all other unit are constant so \[{{r}_{n}}\propto {{n}^{2}}\].
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