Let $x$ , $y$ be the volumes; $m$ , $n$ be the masses of two metallic cubes $P$ and $Q$ respectively. Each side of $Q$ is two times that of $P$ and mass of $Q$ is two times that of $P$ . Let $u = m/x$ and $v = n/y$ . Which one of the following is correct?

$u = 4v$

$u = 2v$

$v = u$

$v = 4u$

Kepler. Discussing PYQs. Q.no. 38

Let xxx , yyy be the volumes; mmm , nnn be the masses of two metallic cubes PPP and QQQ respectively. Each side of QQQ is two times that of PPP and mass of QQQ is two times that of PPP . Let u=m/xu = m/xu=m/x and v=n/yv = n/yv=n/y . Which one of the following is correct?