Question

i) Define derived quantity with example.​

Answer 1

Answer:

Derived quantities are quantities that are calculated from two or more measurements. Derived quantities cannot be measured directly. They can only be computed. Many derived quantities are calculated in physical science. Three examples are area, volume, and density.

Answer 2

Derived Quantities:

• These are physical quantities that have to be mathematically derived from fundamental quantities.

• The fundamental quantities include mass, length, time, current, luminous intensity, etc.

Lets take an example :

Force is a derived quantity :

$F = mass \times acceleration$

$\implies \: F = m \times a$

$\implies \: F = [M] \times [L{T}^{ - 2} ]$

$\implies \: F = [ML{T}^{ - 2} ]$

So, force and it's dimensions have to be expressed in terms of the fundamental quantities like mass (M) , length (L) and time (T).

Hope It Helps.