The word ‘Science’ originated from the Latin word ‘Scientia’, which means ‘to know’.

The word ‘Physics’ comes from the Greek word ‘Physis’, which means ‘nature’.

Anything that can be measured is called a physical quantity. For example, length, mass, volume,...

Scalar Quantity – Physical quantities that have only magnitude and no direction. Vector Quantity – Physical quantities...

CGS System (Centimeter-Gram-Second System) SI System (International System of Units)

The SI unit of electric current is Ampere (A).

There are seven fundamental units in the SI system.

An Astronomical Unit (AU) is used to measure the mean distance between the Earth and...

No, parsec (pc) is not a unit of time. It is a unit of distance...

The dimension of area is [L²].