A fraction $f_1$ of a radioactive sample decays in one mean life, and a fraction $f_2$ decays in one half-life.

  • A

    $f_1 > f_2$

  • B

    $f_1 < f_2$

  • C

    $f_1 = f_2$

  • D

    May be $(A),(B)$ or $(C)$ depending on the values of the mean life and half life

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