Question

What is a metric unit with an example?

Answer 1

In this question, we have to describe a metric unit with an example. We define metric units as those units which consider meter, gram and litre as their base unit to measure any physical quantity. We will have some examples to understand metric units.We also need to understand the difference between metric units and SI- units.

Complete step by step answer:
Every physical quantity can be measured by some well-defined units. Units are the standard for measurement of any physical quantity. For example, length is measured in metres (m).
Different units are followed and adopted worldwide.

Metric unit is one of them. Metric units are those units which consider metre (m), gram (gm) and litre (l) to measure length, mass and volume (capacity) respectively. Generally we use kilograms to measure mass, but in metric units we use grams to measure mass. But we can convert the metric unit into other units.

For example, we can convert kilogram into gram by multiplying by $1000$. And from gram to kilogram by dividing by $1000$. Similarly we can convert metre into kilometre can be multiplied by $1000$. Similarly, we can convert metric units into any other unit.

Note: SI-unit is generally used to measure any physical quantity. These are accepted worldwide. There are seven SI-units, there are – metre(m) for length, kilogram(kg) for mass, second(s) for time, Ampere(A) for electric current, Mole (mol) for Amount of substance/matter, Kelvin(K) for temperature, and Candela (Cd) for luminous intensity.Metric system of units is derived from these SI-units. The only difference is the base unit which it considers. We need to clearly understand the inter-conversion from one unit to another and vice-versa.