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PhysicsNEET 2020Dia-, para- and ferromagnetism

Magnetism and Matter

An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m−11200\ \mathrm{A\,m^{-1}}. The permeability of the material of the rod is: (μ0=4π×10−7 T m A−1\mu_0 = 4\pi \times 10^{-7}\ \mathrm{T\,m\,A^{-1}})

  1. A.2.4π×10−4 T m A−12.4\pi \times 10^{-4}\ \mathrm{T\,m\,A^{-1}}✓
  2. B.8.0×10−5 T m A−18.0 \times 10^{-5}\ \mathrm{T\,m\,A^{-1}}
  3. C.2.4π×10−5 T m A−12.4\pi \times 10^{-5}\ \mathrm{T\,m\,A^{-1}}
  4. D.2.4π×10−7 T m A−12.4\pi \times 10^{-7}\ \mathrm{T\,m\,A^{-1}}

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