Question

Briefly explain SI units and the importance of SI dimensions.

Answer 1

• The international System of Units (SI) is a metric system that is used universally.SI units play a vital role in scientific and technological research and development.
• It is made up of 7 base units which are used for defining 22 derived units.
• The full form of SI unit is System of International.
• Having a Standard unit system is important because it helps the entire world to understand the measurements in one set of unit system.

ex.1) length(l)-meter-m

2)Mass(M)-kilogram-kg

3)Time(T)-Second-s

etc..

IMPORTANCE OF SI UNITS:

1. SI system is based on the precise and definite standards.
2. Latin and Greek prefixes are used in SI system and these refer to the numbers.
3. Without the use of conversion factors, the SI units can be derived from one another.
4. The base of SI system os 10,which makes the conversion easier.

Commonly used Units in measurements are

• CGS system
• MKS system
• ​​​​​​​SI system