Easy MCQ +4 / -1 PYQ · JEE Mains 2022

The magnetic moment of an electron (e) revolving in an orbit around nucleus with an orbital angular momentum is given by :

  1. A $\vec{\mu}_{\mathrm{L}}=\frac{\overrightarrow{\mathrm{eL}}}{2 \mathrm{~m}}$
  2. B $\vec{\mu}_{\mathrm{L}}=-\frac{\overrightarrow{\mathrm{eL}}}{2 \mathrm{~m}}$ Correct answer
  3. C $\vec{\mu}_{l}=-\frac{\overrightarrow{e L}}{\mathrm{~m}}$
  4. D $\vec{\mu}_{l}=\frac{2 \overrightarrow{\mathrm{eL}}}{\mathrm{m}}$

Solution

<p>$\because$ $\overrightarrow \mu = {{q\overrightarrow L } \over {2m}}$</p> <p>$\Rightarrow \overrightarrow \mu = {{ - e\overrightarrow L } \over {2m}}$</p>

About this question

Subject: Physics · Chapter: Atoms and Nuclei · Topic: Bohr's Model of Hydrogen Atom

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