A) \[1 : 2\]
B) \[2 : 1\]
C) \[1 : 4\]
D) \[1 : 8\]
Correct Answer: D
Solution :
\[v\,\alpha \,\frac{1}{\sqrt{r}}\]i.e., \[\frac{{{v}_{1}}}{{{v}_{2}}}=\sqrt{\frac{{{r}_{2}}}{{{r}_{1}}}}\] The velocity of the electrons in two orbitals (r) and (4r) will be in the ratio of 2:1. Their respective circumference are 2nr and 8w. The ratio of the times for completing one revolution is 1:8.
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