Question

Define unit. What do you mean by fundamental and derived units ​

Answer 1

Fundamental unit :

A fundamental unit is that which is independent of any other unit or which can neither be changed nor can be related to any other fundamental unit.

Derived unit :

Derived unit are those which depend on the fundamental units or which can be expressed in terms of the fundamental units.

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Answer 2

Explanation:

there are two types of units fundamental units and derived units fundamental units are the units which are not dependent or other simpler units and derived units are the units which are dependent on the other