Following statements related to radioactivity | vedclass

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(C) Statement $(A)$ is incorrect because radioactivity is independent of physical and chemical conditions.Statement $(B)$ is correct. The law of radio

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$(B)$ and $(C)$ only

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(C) Statement $(A)$ is incorrect because radioactivity is independent of physical and chemical conditions.Statement $(B)$ is correct. The law of radioactive decay is given by $N(t) = N_0 e^{-\lambda t}$,which represents exponential decay.Statement $(C)$ is correct. Taking the natural logarithm of the decay law: $\ln(N) = \ln(N_0) - \lambda t$. The slope of the graph of $\ln(N)$ versus $t$ is $-\lambda$. Since mean life $	au = 1/\lambda$,the slope is $-1/	au$.Statement $(D)$ is incorrect because $\lambda 	imes T_{1/2} = \ln(2) \approx 0.693$,which is a constant.Therefore,statements $(B)$ and $(C)$ are correct.

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