Question

A body of mass $70kgwt$, when completely immersed in water, displaces $20,000c{m}^3$ of water. Find the relative density of material of body.

• A. $7$
• B. $3.5$
• C. $35$
• D. $70$

Answer 1

The correct option is B $3.5$

Mass of the body = 70kg = 70,000g

Volume of the body = 20,000${cm}^3$

Density of the body = $\frac{Mass}{Volume}=\frac{70,000}{20,000}=3.5g/{cm}^3$

Relative Density =$\frac{{Density}_{object}}{{Density}_{water}}=\frac{3.5}{1}=3.5$