CMC Medical CMC-Medical Ludhiana Solved Paper-2013

  • question_answer
    A radioactive elements has half-life period of 600 yr. After 300 yr what amount will remain?

    A)  \[\frac{1}{2}\]                                  

    B)  \[\frac{1}{16}\]

    C)  \[\frac{1}{8}\]                                  

    D)  \[\frac{1}{32}\]

    Correct Answer: D

    Solution :

                    \[n=\frac{1}{T}\] \[n=\frac{3000}{600}=5\] \[\frac{N}{{{N}_{0}}}={{\left( \frac{1}{2} \right)}^{n}}\] \[\frac{N}{{{N}_{0}}}={{\left( \frac{1}{2} \right)}^{5}}\]        \[=\frac{1}{32}\]


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