Q 11-05-127JEE MainJEE Main 2022 (26 Jul, Shift 2)Easy
A body of mass $8\ \text{kg}$ and another of mass $2\ \text{kg}$ are moving with equal kinetic energy. The ratio of their respective momenta will be
Answer: (B) $2 : 1$
$p = \sqrt{2mK}\propto\sqrt m$ for equal $K$: $\dfrac{p_1}{p_2} = \sqrt{\dfrac82} = 2$.
Solution by Sreeraj P, M.Sc Physics