Question

Any solid will float in water if its relative density is :

• A. greater than unity
• B. equal to unity
• C. less than unity
• D. infinite

Answer 1

The correct option is C less than unity

A body with a density less than that of water will float in water.

Now we know for a body, its relative density $=\frac{\text{density of the body}}{\text{density of water}}$

Hence a body with relative density or specific gravity less than $1$ will float in water.