Question:
Pressure is a scalar quantity because
Pressure is a scalar quantity because
Updated On: Jul 6, 2022
- it is the ratio of force to area and both force and area are vectors
- it is the ratio of the magnitude of the force to area
- it is the ratio of the component of the force normal to the area
- it depends on the size of the area chosen
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The Correct Option is C
Solution and Explanation
Pressure is a scalar quantity because it is the ratio of the component of the force normal to the area and it is independent on the size of the area chosen
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Top Questions on Pressure
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Concepts Used:
Pressure
Pressure is defined as the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
Everyday examples of pressure are:
- The working of the vacuum cleaner is an example of pressure. The fan inside the vacuum creates a low-pressure region which makes it easy to suck the dust particles inside the vacuum.
- Using a knife for cutting is another example of pressure. The area exposed from the knife is small but the pressure is high enough to cut the vegetables and fruits.
Formula:
When a force of ‘F’ Newton is applied perpendicularly to a surface area ‘A’, then the pressure exerted on the surface by the force is equal to the ratio of F to A. The formula for pressure (P) is:
P = F / A
Units of Pressure:
The SI unit of pressure is the pascal (Pa)
A pascal can be defined as a force of one newton applied over a surface area of a one-meter square.