Physics · 2026
JEE Main · 8 April 2026, Shift 2 · Q44
Two radioactive substances A and B of mass numbers 200 and 212 respectively, shows spontaneous α -decay with same Q value of 1 MeV. The ratio of…
Two radioactive substances A and B of mass numbers $\displaystyle 200$ and $\displaystyle 212$ respectively, shows spontaneous $\displaystyle \alpha$-decay with same $\displaystyle Q$ value of $\displaystyle 1$ MeV. The ratio of energies of $\displaystyle \alpha$-rays produced by A and B is
$\displaystyle \_\_\_\_$.
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle \frac{2597}{2600}$
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.