The magnetic moment produced in a sample of 2 gram is 8 × 10⁻⁷ A/m ². If its density is 4 g/cm ³ then the magnetization of the sample is (a) 1.6 (b) 1.2 (c) 1.4 (d) 1.8

Answer: (a). Volume V = (mass)/(ρ) = 2/4 = 0.5 cm³ = 5 × 10⁻⁷ m³ Mz = m/V = 8 × 10⁻⁷5 × 10⁻⁷ = 1.6 A m⁻¹ (the moment's unit should read A m²). So the answer is (a) 1.6.

The magnetic moment produced in a sample of 2 gram is 8 × 10⁻⁷ A/m ²… | MHT CET 2026 (16 Apr, Shift 1)

Q10MHT CET 2026 · 16 APR · SHIFT 1Medium

Magnetisation: B, H, M, χ & μ

The magnetic moment produced in a sample of 2 gram is $8 \times 10^{-7}$ A/m ${}^{2}$ . If its density is $4$ g/cm ${}^{3}$ then the magnetization of the sample is

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Answer: (a)

Volume $V = \dfrac{\text{mass}}{\rho} = \dfrac{2}{4} = 0.5\ \text{cm}^3 = 5 \times 10^{-7}\ \text{m}^3$
$M_z = \dfrac{m}{V} = \dfrac{8 \times 10^{-7}}{5 \times 10^{-7}} = 1.6\ \text{A m}^{-1}$ (the moment's unit should read $\text{A m}^2$ ).
So the answer is (a) 1.6.

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