what is the system of unit in SI what is meant by base derived and supplementary unit please answer in detail because this is long question
Answers
Explanation:
Bonjour! Base Units: The units of the base quantities, i.e. , the quantities which are independent and are not usually defined in terms of other physical quantities, are called base units. The seven base quantities along with the respective base SI units are as follows: Length (meter), Mass (kilogram), Time (second), Electric current (ampere), Thermodynamic temperature (kelvin), Luminous intensity (candela) and Amount of substance (mole) The Two more Dimensionless Quantities Defined in SI. 1. Plane angle: Its Sl unit is radian One radian is defined as the plane angle subtended at the center of a circle by an arc equal in length to the radius of the circle. 2. Solid angle: Its Sl unit is steradian. One steradian is defined as the solid angle subtended at the center of a sphere by a surface of the sphere equal in area to that of a square, having each side equal to the radius of the sphere. Hope this helps ....)