light year and parsec is a base unit or derived unit? also tell the diff b/w base unit and derived unit.

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I THINK 200 YEARS AGO, ALL TOP PEOPLES OF COUNTRIES GATHERED IN ONE ROOM PREPARED THAT THE UNIT SHOULD BE STANDARD.THE BASE UNITS ARE THE UNITS WHICH ARE VERY FUNDA LIKE METERS, MASS, KELVINDERIVED UNITS ARE THE UNITS WHICH CAN BE DERIVED OUT FROM THIS BASE UNITSEXAMPLE:AREA----(M)^2VOLUME--(M)^3LIGHT YEARS AND PERISIC BELONGS TO DERIVED UNITS

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base unit is like a fundamental unit from which other units are derived called derived units.Ther r only 7 base units. Light year and parsec is not classified under them. Hence they r derived units.

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Base Unit vs. Derived Unit:
Base Unit:
- A base unit is a fundamental unit of measurement that is defined by a specific physical quantity.
- Base units are independent of other units and do not rely on any other measurements for their definition.
- Examples of base units include meters for length, seconds for time, and kilograms for mass.
Derived Unit:
- A derived unit is a unit of measurement that is derived from combinations of base units.
- Derived units are created by multiplying or dividing base units to express more complex measurements.
- Examples of derived units include newtons for force (kg*m/s^2) and joules for energy (kg*m^2/s^2).

Light Year and Parsec:
- A light year is a derived unit of distance used in astronomy, defined as the distance that light travels in one year.
- A parsec is also a derived unit of distance used in astronomy, defined as the distance at which an object would have a parallax angle of one arcsecond.
- Both light years and parsecs are derived units because they are based on the speed of light and the concept of parallax, respectively.
In conclusion, base units are fundamental measurements that form the foundation of the metric system, while derived units are created by combining base units to express more complex quantities. Light year and parsec are examples of derived units used in astronomy to measure vast distances in space.

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