Question

A student has compressed a body to one-third of its previous volume .what will be its density?

Answer 1

We know that ,
Density = mass/volume
Let mass of body = m
Volume of body = V
Then initial density = m/V

Now,question ask volume will be one -3rd of initial .
then density = m/(V/3) =3m/V

It means final density = 3 × initial density .