Practice question
Question
A manometer with water ( rho = 1000 kg/m³ ) shows a height difference of 0.15 m . What is the pressure difference? (Take g = 9.8 m/s² )
Explanation
Given:
A manometer with water ( rho = 1000 kg/m³ ) shows a height difference of 0.15 m . What is the pressure difference? (Take g = 9.8 m/s² )
Formula:
Δ P = rho g h.
Substitution & Calculation:
rho = 1000 kg/m³, g = 9.8 m/s², h = 0.15 m . Δ P = 1000 × 9.8 × 0.15 = 1470 Pa .
Final Result:
The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.
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