Question

define SI unit and example

Answer 1

SI unit (System International Unit) is universally accepted system of units. For example,
SI unit of :)
Mass is kilogram
Time is seconds
Distance is metre
Speed is metre/sec
Amount of substance is mole
Luminous intensity is candela
Electric current is Ampere
Acceleration is metre/second^2
Force is kgm/s^2

Answer 2

The International System of Units (SI unit)is a scientific method of expressing the magnitudes or quantities of important natural phenomena. There are seven base units in the system, from which other units are derived. This system was formerly called the meter-kilogram-second (MKS) system.
Example:- current SI unit is Ampere