RAJASTHAN PMT Rajasthan - PMT Solved Paper-1997

  • question_answer
    If the half life time of a radioactive material is 3 hours. What will be its quantity after 9 hours?

    A)  1/9                       

    B)         1/27                     

    C)  1/6                       

    D)         1/8

    Correct Answer: D

    Solution :

    Remaining quantity \[N={{N}_{0}}{{\left( \frac{1}{2} \right)}^{9/3}}\] \[N={{N}_{0}}{{\left( \frac{1}{2} \right)}^{3}}=\frac{{{N}_{0}}}{8}\] \[\frac{1}{8}\] of initial amount


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