MGIMS WARDHA MGIMS WARDHA Solved Paper-2009

  • question_answer
    If 8.0 g of a radioactive isotope has a half-life of 10 yr. The half-life of 2.0 g of the same substance is

    A) \[2.5\text{ }yr\]                               

    B) \[5\,yr\]

    C) \[20yr\]                               

    D) \[10\text{ }yr\]

    Correct Answer: D

    Solution :

                     Half-life is independent of initial amount, hence half-life of 2.0 g of substance is also 10 yr.


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