Q150 / 150 · MHT CET 2021 (24 Sep Shift 1) · Physics

What is the SI unit of density?

  • A
    $\mathrm{kg} \mathrm{dm}^3$
  • Correct answer
    B
    $\mathrm{kg} \mathrm{m}^{-3}$
  • C
    $\mathrm{kg} \mathrm{m}{ }^3$
  • D
    $\mathrm{kg} \mathrm{dm}^{-3}$

Solution

$\begin{aligned} & \text { density }=\frac{\text { Mass }}{\text { Volume }} \\ & \text { SI unit of mass }=\mathrm{kg} \\ & \text { SI unit of volume }=\mathrm{m}^3 \\ & \text { SI unit of density }=\frac{\mathrm{kg}}{\mathrm{m}^3} \text { or } \mathrm{kg} \cdot \mathrm{m}^{-3}\end{aligned}$

Hence, the correct answer is option: 'B'.

Relevant Questions