Question

1. What is a Unit? Why do we need standard units?
2, what are S.I Units. what are most common S.i unit​

Answer 1

Answer:

1. A measure

Why do we need standard names

Explanation:

2. Mass length etc

Answer 2

They are the second, with the symbol s, which is the SI unit of the physical quantity of time; the metre, symbol m, the SI unit of length; kilogram (kg, the unit of mass); ampere (A, electric current); kelvin (K, thermodynamic temperature); mole (mol, amount of substance); and candela (cd, luminous intensity).





Answer


We need standard unit for measurement to make our judgement more reliable and accurate. For proper dealing, measurement should be same for everybody. Thus there should be uniformity in measurement. For the sake of uniformity we need a common set of units of measurement, which are called standard units. Nowadays Si units in science and technology almost accepted universally.