Physics · 2022
JEE Main · 28 June 2022, Shift 2 · Q48
Following statements related to radioactivity are given below: (A) Radioactivity is a random and spontaneous process and is dependent on physical and…
Following statements related to radioactivity are given below :
(A)
Radioactivity is a random and spontaneous process and is dependent on physical and chemical conditions.
(B)
The number of un-decayed nuclei in the radioactive sample decays exponentially with time.
(C)
Slope of the graph of $\displaystyle \log _{\mathrm{e}}$ (no. of undecayed nuclei) Vs. time represents the reciprocal of mean life time $\displaystyle (\tau)$.
(D)
Product of decay constant ( $\displaystyle \lambda$ ) and half-life time ( $\displaystyle T_{1 / 2}$ ) is not constant.
Choose the most appropriate answer from the options given below :
Official answer
(3)
(B) and (C) only
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.