Orbital magnetic moment of an electron and the gyromagnetic ratio

1. A.
   $\frac{e}{2m}$, $\frac{eh}{4\pi m}$
2. B.
   $\frac{eh}{4\pi m}$, $\frac{e}{2m}$
3. C.
   $\frac{2m}{e}$, $\frac{4\pi m}{eh}$
4. D.
   $\frac{4\pi m}{eh}$, $\frac{2m}{e}$

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1. A.
   $m = -L/R$
2. B.
   $m = -RL$
3. C.
   $m = -RL/2$
4. D.
   $m = RL$

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1. A.
   inversely proportional to angular momentum.
2. B.
   directly proportional to mass of electron.
3. C.
   directly proportional to angular momentum.
4. D.
   inversely proportional to charge on electron.

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1. A.
   $120^\circ$
2. B.
   $60^\circ$
3. C.
   $180^\circ$
4. D.
   $90^\circ$

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