ICSE /Class 9
Physics MCQ Based On Transmission of pressure in liquids
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ICSE Class 9 Physics Transmission of pressure in liquids
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The total pressure at any point within an incompressible is the sum of the applied pressure at any point in that fluid and the hydrostatic pressure change,due to a difference in height within that fluid.
Atmospheric pressure is a measure of absolute pressure. Gauge pressure is the additional pressure in a system,relative to the atmospheric pressure
Particles of fluid always move from an area of higher pressure to an area of lower pressure. Fluids have the ability to transmit pressure.
Hydrostatic pressure is the pressure of fluid caused by the force of gravity. Blood pressure is the hydrostatic pressure of blood on the blood vessel walls.
Pressure on a liquid depends on only 3 factors.
Units of pressure-Pascal
1 atm = 101325 Pa
Pascal's law is a principle in fluid mechanics that applies to transfer of pressure in liquids,
Pressure change in one part is transmitted without loss to every portion of the fluid and to the walls of the container.
The decrease in atmospheric pressure can cause psychological and physical discomfort for people and animals.So, air cabins are artificially pressurized
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