Question

Relative density of an oil is $0.8$. Find the absolute density of the oil in SI unit.

• A. $80{\text{kg/m}}^3$
• B. $800{\text{kg/m}}^3$
• C. $0.8{\text{g/cm}}^3$
• D. $8{\text{g/cm}}^3$

Answer 1

The correct option is B $800{\text{kg/m}}^3$

Given that, relative density of an oil$=0.8$
We have,
Relative density $=\frac{{\rho }_{\text{oil}}}{{\rho }_{\text{water}}}$
In SI unit, ${\rho }_{\text{water}}=1000{\text{kg/m}}^3$
Thus, ${\rho }_{\text{oil}}=0.8\times 1000=800{\text{kg/m}}^3$