Question

A piece of solid weights $120g$ in air, $80g$ in water and $60g$ in a liquid. The relative density of the solid and that of the liquid are respectively

• A. $3,2$
• B. $2,\frac{3}{4}$
• C. $\frac{3}{2},2$
• D. $2,\frac{3}{2}$

Answer 1

The correct option is C $\frac{3}{2},2$

Relative density of solid$=\frac{W\left(Air\right)-W\left(liquid\right)}{W\left(Air\right)-W\left(Water\right)}=\frac{120-60}{120-80}=\frac{3}{2}$

Relative density of liquid$=\frac{120-0}{120-60}=\frac{120}{60}=2$