GENERAL KNOWLEDGE

Detailed explanation-1: -The units which can neither derived from one another nor resolved into any thing more basic are called fundamental unit. It is independent of any other unit. Any unit which can be obtained by the combination of one or more fundamental units is called derived unit .

Detailed explanation-2: -A derived unit is a unit that results from a mathematical combination of SI base units.

Detailed explanation-3: -Derived SI Units For example, speed, the rate at which a position changes with time, is expressed as a combination of the unit for distance (meters) and the unit for time (seconds).

Detailed explanation-4: -A base unit is the most elementary unit in the system of measurement. For example, an inch is a unit of length, and a meter is also a unit of length. ‘Derived units’ are those units that are obtained as a result of a process in which more than one base unit is manipulated with derived units between each other.

Detailed explanation-5: -The units of quantities other than those measured in fundamental units can be obtained in terms of the fundamental units, and thus the units so obtained are called derived units. Example: Speed = Distance/time.