Question

what is mean by SI unit​

Answer 1

Answer:

SI units are the units of International System of Units.

Note, that SI units are the most widely accepted units.

some SI units :

Force -- newton

acceleration -- m/s

wave number -- m^(-1)

Answer 2

Answer:

The SI base unit are the standard units of measurement defined by the International System of Units ( SI ) for the seven base quantities of what is now known as the International System of Quantities they are notably a basic set from which all other SI Units can be derived.