Question

What is a system of units? Mention the various systems of units and name all basis and supplementary SI units?​

Answer 1

Answer:

Units are of two types

1)Fundamental units

2)Derived units

System of units: A complete set of units which is used to measure all kinds of fundamental and derived quantities is called system of units .

Some of the commonly used system of units are as follows:->

1)C.G.S system :- This is also known as Gaussian system of units which uses centimeter (cm), gram(g), second(s)as the fundamental units of length mass ,time respectively .

2)F.P.S system:- It is the british Engineering system of units which uses foot(ft), pound(Ib),and second(s) as the fundamental units of length,mass ,and time ,respectively the unit of force in this systems is poundal

3)M.K.S system :- In this system ,the units of length mass and time are metre(m), kilogram(kg) and second(s) respectively. The unit of force in this system is Newton.

4) International system (SI) of units:- it is modernised and extended form of metric system like CGS and MKS systems. This system contain seven fundamental units and two supplementary units.

. Supplementary.Quantities. Units. symbol

Angle. Radian. red

solid angle. stardian. sr

Answer 2

Explanation:

The International System Of Units (SI) is the metric system that is used universally as a standard for measurements. 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 SI units can be expressed either as standard multiple or as fractional quantities.