NEET2020Physics-Magnetic Properties of Materials
NEET 2020 Physics Magnetic Susceptibility and Permeability MCQ Question
Type: MCQ-numerical-Medium-Class 12
An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 Å m⁻¹. The permeability of the material of the rod is:
A
2.4π × 10⁻⁵ T m A⁻¹
B
2.4π × 10⁻⁷ T m A⁻¹
C
2.4π × 10⁻⁴ T m A⁻¹
D
8.0 × 10⁻⁵ T m A⁻¹
Correct Answer
Option C
Detailed Explanation
Permeability μ = μ₀(¹⁺ χ), where χ = 599. μ = 4π × 10⁻⁷ × 600 = 2.4π × 10⁻⁴ T m A⁻¹.
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