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AIIMS 201827 May
Exam
AIIMS
Year
2018
Date
27 May
Subject
Physics
Chapter
Magnetic Properties of Matter

AIIMS 2018 · 27 May · Physics · Magnetic Properties of Matter

A paramagnetic substance of susceptibility 3 × 10^ -4 is placed in...

A paramagnetic substance of susceptibility 3×10−43 \times 10^{-4} is placed in a magnetising field of 4×10−4 A m−14 \times 10^{-4} \mathrm{~A} \mathrm{~m}^{-1}. Then the intensity of magnetisation in the units of Am−1\mathrm{A} \mathrm{m}^{-1} is

Options

  1. A1.33×1081.33 \times 10^8
  2. B0.75×10−80.75 \times 10^{-8}
  3. C12×10−812 \times 10^{-8}
  4. D14×10−814 \times 10^{-8}

Correct answer

C. 12×10−812 \times 10^{-8}

Step-by-step solution

I=χH=(4×10−4)×(3×10−4)=12×10−8 A m−1\begin{aligned} I & =\chi H=\left(4 \times 10^{-4}\right) \times\left(3 \times 10^{-4}\right) \\ & =12 \times 10^{-8} \mathrm{~A} \mathrm{~m}^{-1}\end{aligned}
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