Practice question

Given: A material with susceptibility chi = 3 × 10⁻⁴ has a relative permeability μ_r of: These values define the system as per NCERT data. Formula: μ_r = 1 + chi. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Given: chi = 3 × 10⁻⁴. Substitute: μ_r = 1 + 3 × 10⁻⁴= 1.0003 . Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.