1.Derive expression for variance of pressure with depth.

1.	1.Derive expression for variance of pressure with depth.
Answer» State that the pressure exerted by a liquid of density rho (p) , at a depth h is p = pgh; State the factors affecting the pressure at a point in a liquid; state the laws of liquid pressure. Pressure gauge. Derive p = pa + ρgh; Realise cross - sectional or base area or the shape do not determine Liquid Pressure. Understand that the liquid pressure is same at all points at the same depth; Hydrostatic paradox.

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