Question: Unit of pressure in SI system
Options:
Atmosphere
Dynes/cm²
Pascal
mm of mercury
✅ Explanation: The Pascal (Pa) is the SI unit of pressure. It is defined as one newton per square meter (N/m²).
🔑Key Points :
-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).