Physics · 2020
NEET 2020 · 14 October · Code Z6 · Q117
The half life of a radioactive sample undergoing α -decay is 1.4 × 10^17 s. If the number of nuclei in the sample is 2.0 × 10^21, the activity of the…
The half life of a radioactive sample undergoing $\displaystyle \alpha$-decay is $\displaystyle 1.4 \times 10^{17} \mathrm{~s}$. If the number of nuclei in the sample is $\displaystyle 2.0 \times 10^{21}$, the activity of the sample is nearly
Official answer
(4)
$\displaystyle 10^4 B q$
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