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Standard IX

Physics

Pressure at a Depth in a Liquid

The absolute ...

Question

The absolute pressure at a point 2.5 m below the clear water surface is measured as 125.703 kN/ $m^{2}$ . If the atmospheric pressure is taken as 101.325 kN/ $m^{2}$ , the gauge pressure in kN/ $m^{2}$ at this point would be

113.514

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24.378

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45.401

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56,757

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Solution

The correct option is C 45.401

For gauge pressure,
$P_{a t m} = 0 ∴ P = 125.703 - 101.325 = 24.378 k N / m^{2}$

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The absolute pressure at a point 2.5 m below the clear water surface is measured as 125.703 kN/m2. If the atmospheric pressure is taken as 101.325 kN/m2, the gauge pressure in kN/m2 at this point would be

The correct option is C 45.401 For gauge pressure, Patm=0∴ P=125.703−101.325=24.378 kN/m2

The absolute pressure at a point 2.5 m below the clear water surface is measured as 125.703 kN/ $m^{2}$ . If the atmospheric pressure is taken as 101.325 kN/ $m^{2}$ , the gauge pressure in kN/ $m^{2}$ at this point would be

The correct option is C 45.401

For gauge pressure,
$P_{a t m} = 0 ∴ P = 125.703 - 101.325 = 24.378 k N / m^{2}$