Question

If a body compressed to half its previous volume, what will effect on its density and why?

Answer 1

We know that d=m/v

Therefore if it's volume of body is compressed to half of its previous cool then it's d will be doubled

Answer 2

Given:

Initial volume = V  

New volume = $\frac{V}{2}$  

To find: New density

Calculation:

Density is defined as the ratio of mass to volume.  

Let the initial volume be V, initial mass be m and initial density is D.

$Density=\frac{Mass}{Volume}$  

$D=\frac{m}{V}$  

Now when new density is D', mass will be constant i.e. m and new volume is V/2 then:

$D'=\frac{m}{(V/2)} =\frac{2m}{V}$    

Therefore, D' = 2D

So final density is twice the initial density.