Target Exam

CUET

Subject

Physics

Chapter

Atoms

Question:

The magnetic moment (µ) of a revolving electron around the nucleus varies with principal quantum number n as

Options:

$\mu \propto n$

$\mu \propto 1 / n$

$\mu \propto n^2$

$\mu \propto 1 / n^2$

Correct Answer:

$\mu \propto n$

Explanation:

$\mu = IA = \frac{Q}{T} A \propto n$

Since $ A = \pi r^2 \propto n^4$

$ T \propto n^3$