34.2 Law of radio-active decay

If       N0  :    number of surviving nuclei at t = 0
          N   :    number of surviving nuclei at t = t
         dN  :    number of nuclei decaying in dt.

then   dN   =  - Nl (l : decay constant)
          dt

\      dN   =   - Nl ............(1)
          dt

Integratory equation (1) with t = 0, N = N0 initial condition we get,

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Index

34.1 Laws of radio - active transmutation
34.2 Law of radio - active decay
34.3 Half - Life period : T
34.4 Mean Life Time : t

Chapter 35