1.

The age of a specimen, t, is related to the daughter/parent ratio D/P by the equation

Answer»

<P>`t = (1)/(lamda)" ln" (D)/(P)`
`t = (1)/(lamda) ln (1 + (P)/(D))`
`t = (1)/(lamda) ln (1 + (D)/(P))`
`t = (1)/(lamda) ln (2 + (P)/(D))`

Solution :`N = N_(0) E^(-lamdat)`
Where N = parent remaining = P
and `N_(0)=` Parent + DAUGHTER `= P + D`
`P = (P +D) e^(-lamdat) RARR (P)/(P+D) = e^(-lamda t)`
`rArr ln (P + D)/(P) = lamda t rArr t = (1)/(lamda) ln (1+(D)/(P))`


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