Haryana PMT Haryana PMT Solved Paper-2006

  • question_answer
    If the half-life of an isotope X is 10 years, its decay constant is:

    A)  \[6.932\text{ }y{{r}^{-1}}\]

    B)  \[0.6932y{{r}^{-1}}\]

    C)  \[0.06932\text{ }y{{r}^{-1}}\]

    D)  \[0.006932\text{ }y{{r}^{-1}}\]

    Correct Answer: C

    Solution :

                    We know that,               \[\lambda =\frac{0.693}{{{t}_{1/2}}}\] \[=\frac{0.693}{10}=0.0693y{{r}^{-1}}\]


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