Physics · 2025
JEE Main · 23 January 2025, Shift 1 · Q44
A radioactive nucleus n_2 has 3 times the decay constant as compared to the decay constant of another radioactive nucleus n_1. If initial number of…
A radioactive nucleus $\displaystyle n_2$ has $\displaystyle 3$ times the decay constant as compared to the decay constant of another radioactive nucleus $\displaystyle \mathrm{n}_1$. If initial number of both nuclei are the same, what is the ratio of number of nuclei of $\displaystyle \mathrm{n}_2$ to the number of nuclei of $\displaystyle \mathrm{n}_1$, after one half-life of $\displaystyle \mathrm{n}_1$ ?
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 1$/$\displaystyle 4$
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.