Half-life of a substance is 10 years. In what | vedclass

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Question

(c) $N = {N_0}{e^{ - t/{T_{1/2}}}}$

$\Rightarrow \frac{1}{4} = {e^{ - t/10}}$

$ \Rightarrow {\left( {\frac{1}{2}} \right)^2} = \frac{1}{{{e^{t/1

Vedclass · Accepted Answer

$20$

Vedclass · Answer

(c) $N = {N_0}{e^{ - t/{T_{1/2}}}}$

$\Rightarrow \frac{1}{4} = {e^{ - t/10}}$

$ \Rightarrow {\left( {\frac{1}{2}} \right)^2} = \frac{1}{{{e^{t/10}}}}$

$\Rightarrow t = 20\;years$

Half-life of a substance is $10$ years. In what time, it becomes $\frac{1}{4}\,th$ part of the initial amount ........$years$

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