Question

The S.I. unit of Pressure is _______.
1. Newton
2. Kg/m³
3. Pascal
4. Joule

Answer 1

Correct Answer - Option 3 : Pascal

The correct answer is Pascal.

 

• The pressure is the force acting perpendicularly on a unit area of the object.
• The formula for calculating pressure is Pressure = Force/Area.
• The SI unit of measuring force is the newton (N), and the SI unit of measuring area is ‘square meter’ (m²).
• Therefore, the SI unit of measuring pressure is ‘newtons per square meter’ (N/m² or N ^m–2 ).
• It is also called Pascal (Pa).

 

Force:

• A push or pull on a body is called force.
• The SI unit of measuring force is the Newton (N).

Density:

• The density of a substance is defined as the mass of the substance per unit volume.
• SI unit of density is ‘kilograms per cubic meter’ (which is written in short form as kg/m³ or kg ^m–3.

Work Done:

• Work is done when a force produces motion.
• Work done in moving a body is equal to the product of force exerted on the body and the distance moved by the body in the direction of the force.
• The SI unit of work is Joule.