What is mean by physical quantity?

Anything that can be measured is called a physical quantity. It is described with the help of magnitude and the unit. There are two types

1) Base quantity

2) Derived Quantity

A physical quantity is the quantity that can be measured directly or indirectly and consists of a magnitude and a unit. Mass, length, time, density, temperature etc are some examples of physical quantities. Happiness, sadness etc cannot be measured. So, they are not physical quantities. We cannot find the exact value of any physical quantity without measurement.

There are two types of physical quantity. They are:

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measure their densities same density, same sub

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.