Fluid MechanicsHard
Question
At shallow depth h, the pressure in the ocean is simply given by P = P0 + ρgh, in which ρ is the density of water and P0 is the air pressure. As we go deeper, the high pressure causes the water to compress and become denser. Which of the following sketches illustrates the correct dependence of the pressure on the depth h(deep in the ocean) ?
Options
A.

B.

C.

D.

Solution
As depth increases, density of water increases so rate of increase of pressure with depth will be positive.
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