alleryStart learning →Total pressure at a depth h in a liquid open to the atmosphere is
AP_total = atmospheric pressure + h * rho * g
BP_total = atmospheric pressure - h * rho * g
CP_total = atmospheric pressure / (h * rho * g)
DP_total = atmospheric pressure * h * rho * g
Answer & Solution
Correct answer: A. P_total = atmospheric pressure + h * rho * g
1. At the surface, the liquid feels atmospheric pressure.
2. At depth h below, the liquid adds h * rho * g.
3. Total pressure is the sum: P_0 + h * rho * g.
4. So option A is correct.
_Source: Selina Concise Physics Class 9, Ch 4 Pressure in Fluids and Atmospheric Pressure (Mistral OCR'd PDF), section on absolute pressure_
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