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JEE Main 202430 JanuaryEvening Shift

Exam: JEE Main
Year: 2024
Date: 30 January
Shift: Evening Shift
Subject: Physics
Chapter: Atomic Physics

JEE Main 2024 · 30 January · Evening Shift · Physics · Atomic Physics

An electron revolving in n ^ th Bohr orbit has magnetic moment μ _...

An electron revolving in

{n}^{\text{th}}

Bohr orbit has magnetic moment

{\mu}_{n}

. If

{\mu}_{n} ∝ {n}^{x}

, the value of

x

is:

Options

A $2$
B $1$
C $3$
D $0$

Correct answer

B. $1$

Step-by-step solution

Magnetic moment of electron is given by, ${\mu}_{n} = \dfrac{ehn}{4\pi{m}_{e}}$ .
Clearly, ${\mu}_{n} ∝ {n}^{1}$ . Therefore, $x = 1$ .

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