Question

Briefly explain the types of physical quantities.

Answer 1

Physical quantity is a quantity which can be measured. Like weight of rice . Here weight is physical quantity . Length of stick , length is also a physical quantity.
There are two types of physics quantities.
1. Fundamental physical quantities
2. Derived physical quantities .

1. Fundamental physical quantity :- quantities which do not depend on other quantities are the fundamental quantities. There are seven physical quantities.
e.g., Length, Mass, Time, Electric Current, Temperature, Luminous Intensity and Amount of Matter.

2. derived physical quantities :- quantities which depend upon fundamental physical quantities are known as derived physical quantities.
example :- force is derived physical quantity , because it can be derived with help of fundamental physical quantity ( Mass, length and time)

Answer 2

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$\underline{\mathfrak{\pink{Fundamental\:Quantities---}}}$

These are the quantities which are independent of other quantities. Ex- Mass, length

$\underline{\mathfrak{\pink{Derieved\:Quantities--}}}$ These are the quantities which are derived from fundamental quantities.

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$\underline{\boxed{\red{OTHERS}}}$

★☆°Dimensional constant (Ex Gravitational constant)

These quantities have constant values but they posses dimensions.

★☆°Dimensional variables( ex-Volume)

These quantities have variable values

★☆°Dimensionless constant( ex-1,2,3...)

These quantities have constant values but they lack Dimension

★☆°Dimensionless variables.(ex-Angles)

They are variables and don't have dimensions