Physics · 2022
JEE Main · 26 July 2022, Shift 1 · Q33
The disintegration rate of a certain radioactive sample at any instant is 4250 disintegrations per minute. 10 minutes later, the rate becomes 2250…
The disintegration rate of a certain radioactive sample at any instant is $\displaystyle 4250$ disintegrations per minute. $\displaystyle 10$ minutes later, the rate becomes $\displaystyle 2250$ disintegrations per minute. The approximate decay constant is :
(Take $\displaystyle \log _{10} 1.88=0.274$ )
Official answer
(3)
$\displaystyle 0.063 \mathrm{~min}^{-1}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.