Question:
The formula to calculate liquid pressure is
The formula to calculate liquid pressure is
Updated On: Feb 24, 2026
- P=mgh
- P=wgh
- P=ρgh
- P=Fgh
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The Correct Option is C
Solution and Explanation
To solve the given problem, we need to identify the correct formula for calculating liquid pressure from the list of options. Let's examine each option:
- P = mgh
Here, P denotes pressure, m is mass, g is acceleration due to gravity, and h is height. This formula is incorrect for liquid pressure, as it resembles the potential energy formula rather than pressure. - P = wgh
In this formula, w typically refers to weight. Although weight is related to mass by the equation w = mg, this formulation does not correctly represent the pressure equation for liquids. - P = ρgh
This is the correct formula. Here, P represents the pressure exerted by a liquid, ρ (rho) is the density of the liquid, g is the acceleration due to gravity, and h is the height of the liquid column. This formula accurately represents the pressure exerted by a static column of liquid. - P = Fgh
This formulation lacks specific contextual meaning tied to liquid pressure calculations. F typically denotes force, which is not independently used with gh for calculating liquid pressure.
From the analysis above, the correct formula to calculate the pressure exerted by a liquid at a certain depth is P = ρgh.
Hence, the correct answer is: P = ρgh.
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