Practice question
Question
A manometer with seawater (ρ\=1.03×103kg/m3) shows a height difference of 0.19m. What is the pressure difference? (Take g\=10m/s2)
Explanation
ΔP = ρgh. ρ = 1.03×103kg/m3, g = 10m/s2, h = 0.19m. ΔP = 1.03×103×10×0.19 = 1957Pa. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 1957 Pa. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.
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