Physics · 2023
JEE Main · 29 January 2023, Shift 1 · Q19
If a radioactive element having half-life of 30 min is undergoing beta decay, the fraction of radioactive element remains undecayed after 90 min.…
If a radioactive element having half-life of $\displaystyle 30$ min is undergoing beta decay, the fraction of radioactive element remains undecayed after $\displaystyle 90$ min . will be
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle \frac{1}{8}$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.