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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Atoms
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The half -life period of a radioactive element A is same as mean life of another radioactive element B . Initially both of them have same number of atoms


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Answer : (c) y will decay at a faster rate than n
Explanation :
$\lambda_{A}=0.693 \lambda_{B}$
$\lambda_{A} < \lambda_{B}$
or rate decay = $\lambda N$
Initially no . of atoms (N) of both are equal but since $\;\lambda_{B} > \lambda_{A}\; , B$ will decay at a faster rate than x .
answered Feb 28, 2014 by yamini.v

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