Two bodies of mass $4 g$ and $25 g$ are moving with equal kinetic energies. The ratio of magnitude of their linear momentum is :
(1) $3: 5$
(2) $5: 4$
(3) $2: 5$
(4) $4: 5$
$\frac{P _1^{2}}{2 m _1}=\frac{P _2^{2}}{2 m _2}$
$\frac{P _1}{P _2}=\sqrt{\frac{m _1}{m _2}}=\frac{2}{5}$
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