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A paramagnetic substance in the form of a cube with
P sides \( 1 \mathrm{~cm} \) has a magnetic dipole moment of \( 20 \times 10^{-6} \)

W \( \mathrm{J} / \mathrm{T} \) when a magnetic intensity of \( 60 \times 10^{3} \mathrm{~A} / \mathrm{m} \) is applied. Its magnetic susceptibility is
(1) \( 4.3 \times 10^{-2} \)
(2) \( 2.3 \times 10^{-2} \)
(3) \( 3.3 \times 10^{-4} \)
(4) \( 3.3 \times 10^{-2} \)
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