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13.Nuclei
hard
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 $\log _{e}$ (no. of undecayed nuclei) $Vs$. time represents the reciprocal of mean life time $(\tau)$.
$(D)$ Product of decay constant ( $\lambda$ ) and half-life time $\left(T_{1 / 2}\right)$ is not constant.
Choose the most appropriate answer from the options given below
A
$(A)\,and\,(B)$ only
B
$(B)\,and\,(D)$ only
C
$(B)\,and\,(C)$ only
D
$(C)\,and\,(D)$ only
(JEE MAIN-2022)
Solution
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Standard 12
Physics
