First slide

Dimensions of physical quantities

Question

Find the dimensional formula of density.

Easy

A

$[{ML}^{- 3}]$
B

$[{ML}^{3}]$
C

$[ML]$
D

Dimensionless

Solution

$Density = \frac{mass}{volume} [Density] = \frac{[mass]}{[volume]} = \frac{[M]}{[L^{- 3}]} = [{ML}^{- 3}]$

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