Name the fundamental quantities in SI .

What is SI system of units ? State and define the fundamental unit in SI.

What is fundamental quantity?

Name three fundamental particles which make an atom.

In defining the standard of length we have to specify the temperature at which measurement should be made. Are we justified in calling length a fundamental quantity if another physical quantity, temperature has to be specified in choosing a standard?

Name three physical quantities having the same dimensional formula.

What is the fundamental unit of life ?

Name and explain the fundamental and supplementary units in SI system.

What is the fundamental SI unit of luminosity?