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What is the dimension of Density


Dimensional Formula of Density

In this article, we will find the dimension of density
Dimensional formula for density is
$[M^1 L^{-3}]$
Where
M -> Mass
L -> Length

We would now derive this dimensional formula.

Derivation for expression of Dimension of Density

Density is defined as the  mass per unit Volume
$\rho= \frac {mass}{Volume} = \frac {m}{V}$

Now the dimension of Mass = $[M^1]$

Now Dimension of Volume = $ [L^3]$
Hence Dimension of Density is given by
$\text {Dimension of Density}= \frac {[M^1]} {[L^3]} = [M^1 L^{-3}]$
Unit of Density  is $kg/m^3$

Try the free Quiz given below to check your knowledge of Dimension Analysis:-


Quiz on Dimensional Analysis


1. Which of the following pair does not have the same dimensions

Question 1 of 5

2. Which of the following is a dimensionless quantity

Question 2 of 5

3. A unitless quantity

Question 3 of 5

4. A dimensionless quantity

Question 4 of 5

5. Which of the following has the dimensions of pressure?

Question 5 of 5


 


Related Articles and references

  1. New Simplified Physics by SL Arora : I highly recommend this book for class 11 Physics students. It is easy to understand with lots of solved problems.
  2. Dimensional Analysis:- a very good website for physics concepts
  3. Dimensional Formula of Work
  4. Dimensional Formula of Spring constant
  5. Dimension of Force

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