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AIIMS 2005

Exam: AIIMS
Year: 2005
Subject: Physics
Chapter: Magnetic Effects of Current

AIIMS 2005 · Physics · Magnetic Effects of Current

The magnetic moment (μ) of a revolving electron around the nucleus...

The magnetic moment

(\mu)

of a revolving electron around the nucleus varies with principal quantum number

n

as

Options

A $\mu \propto n$
B $\mu \propto 1 / n$
C $\mu \propto n^2$
D $\mu \propto 1 / n^2$ .

Correct answer

A. $\mu \propto n$

Step-by-step solution

\begin{aligned}& L=n \cdot \frac{h}{2 \pi},\\ & \mu_n=\frac{e}{2 m} \cdotn \frac{h}{2 \pi} \text{ i.e. } \mu \propton \end{aligned}

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