2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-28

  • question_answer
    If T is the half life of a radioactive material, then the fraction that would remain after a time T/2 is.

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

    B)  \[\frac{3}{4}\]

    C)  \[\frac{1}{\sqrt{2}}\]                    

    D)  \[\frac{\sqrt{2}-1}{\sqrt{2}}\]

    Correct Answer: C

    Solution :

    Active fraction \[=\frac{1}{{{2}^{{\scriptstyle{}^{t}/{}_{Th}}}}}=\frac{1}{{{2}^{{\scriptstyle{}^{1}/{}_{2}}}}}=\frac{1}{\sqrt{2}}\]               


You need to login to perform this action.
You will be redirected in 3 sec spinner