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

  • question_answer
    If \[2.0\,g\] of a radioactive isotope has a half-life of 20 hr, the half-life of \[0.5g\] of the same substance is [MP PMT 1990; MNR 1992]

    A)                 20 hr     

    B)                 80 hr

    C)                 5  hr      

    D)                 10 hr

    Correct Answer: A

    Solution :

              Half-life period is a characteristic of radioactive isotope which is independent of initial concentration.


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