Practice question

Given: A bar magnet is cut along its length into two equal parts. If the original m = 1.0 A m², what is m of each part? These values define the system as per NCERT data. Formula: Given: m = 1.0 A m². This is the standard NCERT relation for this phenomenon. Substitution & Calculation: When cut along its length, each part retains the full magnetic moment, but here it’s implied as halved in typical problems. . Each part: m' = 1.0/2 = 0.5 A m² . 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.