Practice question

P = Pa+ρgh. Pa = 1.01×105Pa, ρ = 1.03×103kg/m3, g = 9.8m/s2, h = 450m. P = 1.01×105+1.03×103×9.8×450 = 1.01×105+4.5411×106 = 4.6421×106Pa. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 4.6 × 10⁶ Pa. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.