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  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-22

  • question_answer
    After some time number of radioactive nuclei of an isotope become constant at \[\frac{AB}{In(2)}\] where B is the half time and A is the rate at which radioactive isotope is produced then A is : (when no. of radioactive nuclei become constant)

    A)  Increasing exponentially

    B)  decreasing exponentially

    C)   constant

    D)  dependent upon decay constant.

    Correct Answer: C

    Solution :

    Given \[N=\frac{AB}{\ln (2)}\]or\[A=\lambda N\] Since, N is constant, A will be constant.


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