The nuclei of tworadioactive isotopes of same substanceA^(236) and B^(234) are present in the ratio of 4:1 in an ore obtained form some other planet. Their half-lives are 30 and60 minutes respectibvely. Both isotopes are alpha emitters and acitity of isotopeA^(236) si 1 rutherford(10^(6) dps). Calcualte: (a) After how much time their activities will becomes identical? (b) The time required tobring the ratio of their atoms to 1:1

The nuclei of tworadioactive isotopes of same substanceA^(236) and B^(

1.	The nuclei of tworadioactive isotopes of same substanceA^(236) and B^(234) are present in the ratio of 4:1 in an ore obtained form some other planet. Their half-lives are 30 and60 minutes respectibvely. Both isotopes are alpha emitters and acitity of isotopeA^(236) si 1 rutherford(10^(6) dps). Calcualte: (a) After how much time their activities will becomes identical? (b) The time required tobring the ratio of their atoms to 1:1
Answer» ANSWER :(a) `180` MIN., (B) `120` min