Question

Distinguish between fundamental quantity and derived quantity.

Answer 1

Hint: Derived quantities are those quantities which depends on the other quantities, or we can say that we can express them in the form of other subsequent quantities. Fundamental quantities are independent, that means they are used as the base for other units.

Complete step by step answer:
From the concept of fundamental quantities, we know that they do not depend on any other quantity that means the independent quantities are known as fundamental quantities. All the quantities used in physics are defined with the help of seven quantities.
Derived quantities depend on the fundamental quantities to be defined. Other than the seven fundamental quantities are included in derived quantities. We can derive these quantities using fundamental quantities. The example of drive quantities is power, work, energy, etc.

Additional Information:
We know that the unit of fundamental quantity mass is the kilogram, the electric current is Ampere, time is second, the intensity of luminous body is Candela, the temperature is Celsius, the substance’s amount is mole and length is metre. Dimensional analysis is a method in which we express the given equation in the form of its dimensions.

Note:
Derived quantities are obtained from the product or division of fundamental quantities. We can remember the unit and dimension of all the fundamental quantities to find and express the derived units in the fundamental unit’s form. To find the unit of an unknown we can use the non-dimensional analysis by converting the given expression into its base units and then base dimensions.