A swimmer is at a depth of 5m in a lake (ρ\=1000kg/m3). What is the gauge pressure experienced by the swimmer? (Take g\=
Gauge pressure is Pg = ρgh. ρ = 1000kg/m3, g = 10m/s2, h = 5m. Pg = 1000×10×5 = 5×104Pa. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 5 × 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.
