Which is the correct expression for half-life

  • A

    ${(t)_{1/2}} = \log \,2$

  • B

    ${(t)_{1/2}} = \frac{\lambda }{{\log \,2}}$

  • C

    ${(t)_{1/2}} = \frac{\lambda }{{\log \,{\rm{2}}}}(\,2.303)$

  • D

    ${(t)_{1/2}} = \frac{{2.303\,{\rm{ log\,2}}}}{\lambda }$

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