Practice question
Question
A manometer with whole blood (ρ\=1.06×103kg/m3) shows a height difference of 0.18m. What is the pressure difference? (Take g\=10m/s2)
Explanation
ΔP = ρgh. ρ = 1.06×103kg/m3, g = 10m/s2, h = 0.18m. ΔP = 1.06×103×10×0.18 = 1908Pa. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 1908 Pa. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.