Question

What is Pressure? Define it.​

Answer 1

Answer:

Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure is the pressure relative to the ambient pressure. Various units are used to express pressure.

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Answer 2

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.