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NEET 2024

Exam: NEET
Year: 2024
Subject: Physics
Chapter: Magnetic Properties of Matter

NEET 2024 · Physics · Magnetic Properties of Matter

The incorrect relation for a diamagnetic material (all the symbols...

The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and

\varepsilon

is a small positive number) is

Options

A $\mu \lt \mu_0$
B $0 \leq \mu_r \lt 1$
C $-1 \leq \chi \lt 0$
D $1 \lt \mu_r \lt 1+\varepsilon$

Correct answer

D. $1 \lt \mu_r \lt 1+\varepsilon$

Step-by-step solution

For diamagnetic material,

0 \leq \mu_r \lt 1

\chi=\mu_r-1

\Rightarrow-1 \leq \chi \lt 0

\mu_r=\frac{\mu}{\mu_0}

$\Rightarrow \mu \lt \mu_0 \quad\left(\because \mu_r \lt 1\right)

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