How a Bohr-orbit quantity (speed, frequency, magnetic moment, angular momentum) varies with n or r

1. A.
   $v_{n} \propto n$
2. B.
   $v_{n} \propto \frac{1}{n}$
3. C.
   $v_{n} \propto n^{2}$
4. D.
   $v_{n} \propto \frac{1}{n^{2}}$

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1. A.
   2
2. B.
   1
3. C.
   3
4. D.
   0

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1. A.
   $\sqrt{r}$
2. B.
   $\frac{1}{r}$
3. C.
   $r$
4. D.
   $\frac{1}{\sqrt{r}}$

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1. A.
   $\frac{1}{n}$
2. B.
   $\frac{1}{n^{3}}$
3. C.
   $\frac{1}{n^{4}}$
4. D.
   $\frac{1}{n^{2}}$

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