JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Rate of decay and Half-life

  • question_answer
    What will be half-life period of a nucleus if at the end of 4.2 days, \[N=0.798\,{{N}_{0}}\]              [MP PET 2000]

    A)                 15 days

    B)                 10 days

    C)                 12.83 days          

    D)                 20 days

    Correct Answer: C

    Solution :

              \[t=\frac{2.303\times {{t}_{1/2}}}{0.693}\log \frac{{{N}_{o}}}{N},N=0.798{{N}_{o}}\]


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