What is the gauge pressure at a depth of 3.5m in seawater (ρ\=1.03×103kg/m3)? (Take g\=10m/s2)
Gauge pressure: Pg = ρgh. ρ = 1.03×103kg/m3, g = 10m/s2, h = 3.5m. Pg = 1.03×103×10×3.5 = 3.605×104Pa. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 3.6 × 10⁴ Pa. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCBI Bookshelf, Ideal Gas Law: P1V1/T1 = P2V2/T2.