Physics
The pressure P1 at a certain depth in river water and P2 at the same depth in sea water are related as:
- P1 > P2
- P1 = P2
- P1 < P2
- P1 - P2 = atmospheric pressure
Fluids Pressure
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Answer
P1 < P2
Reason — As the density of sea water is more than the density of river water, hence, the pressure at a certain depth in sea water is more than that at the same depth in river water because pressure increases with the increase in density of liquid.
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Related Questions
The pressure inside a liquid of density ρ at a depth h is:
- hρg
- h/ρg
- hρ/g
- hρ
Out of the following, which one is correct about the law of liquid pressure ?
- Pressure is different in all directions about a point inside the liquid.
- In a stationary liquid, pressure is different at all points on a horizontal plane.
- Inside the liquid, pressure decreases with an increase in depth from its free surface.
- It increases with an increase in the density of the liquid.
The pressure P1 at the top of a dam and P2 at a depth h from the top inside water (density ρ) are related as:
- P1 > P2
- P1 = P2
- P1 - P2 = hρg
- P2 - P1 = hρg
The wall of a dam is made thicker at the bottom because :
- the pressure exerted by a liquid remains the same with its depth
- the pressure exerted by a liquid decreases with its depth
- the pressure exerted by a liquid increases with its depth
- of safety from outer forces.