Question

A substance with relative density more than 1 implies that it is lighter than water and therefore it floats in the water.

• A. True
• B. False

Answer 1

The correct option is B False

1. $\mathrm{Relative}\mathrm{density}\mathrm{of}\mathrm{body}$ = $\frac{\mathrm{Density}\mathrm{of}\mathrm{body}}{\mathrm{Density}\mathrm{of}\mathrm{water}}$

2. For a body to sink in water,

density of body > density of water
Dividing both sides by density of water

$\frac{\mathrm{density}\mathrm{of}\mathrm{body}}{\mathrm{density}\mathrm{of}\mathrm{water}}$ > $\frac{\cancel{\mathrm{density}\mathrm{of}\mathrm{water}}}{\cancel{\mathrm{density}\mathrm{of}\mathrm{water}}}$

So, the relative density of body > 1
3. This indicates that if the relative density is greater than 1, it will be heavier than water and will sink into the liquid.

Hence, the given statement is False.