Practice question

For a rod pivoted at one end: I = 13ML2. M = 3kg, L = 1.5m. I = 13×3×(1.5)2 = 1×2.25 = 2.25kg m2. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 2.25 kg m². This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.