what do you mean by pressure ? what atmospheric pressure ? what pressure exerted by a liquid on the container?
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continuous physical force exerted on or against an object
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Pressure:-
Pressure simply it is defined as the magnitude of the normal force acting per unit area. Pressure comes under scalar quantity.
SI UNIT-: Pascal(Pa), 1 Pa = 1N/m².
Types of Pressure-
(i) Atmospheres Pressure-: Pressure exerted by the atmosphere is known as atmospheric pressure. Barometer is used to measure the atmospheric pressure.
(ii) Gauge Pressure-:When the pressure is excess to atmospheric pressure then it is measured with the help of measuring instrument known as manometer and that pressure is known as guage pressure.
(iii) Absolute Pressure-:It is collection of both atmospheric pressure and guage pressure.
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