PHYSICS [1 Mark Question Answer]

Basic physical quantities that do not depend upon other quantities are called fundamental physical quantities. There are seven fundamental quantities – length, mass, temperature, time, electric current, luminous intensity and amount of substance.

General Conference of Weights and Measures.

1. The metric units are accurate whereas the traditional units were not uniform.
2. The metric system is accepted globally whereas the traditional units had different values at different places.

1. It should be accepted universally.
2. It should be accurate.
3. It should be neither too small nor too big and easy to use.

Physical quantities that are derived from one or more fundamental physical quantities are called derived physical quantities.
Examples: area, volume, speed, density, etc.

Determining the exact value of an unknown quantity by comparing it with a known fixed quantity is called measurement.