There are two radioactive substance `A` and `B`. Decay consant of `B` is two times that of `A`. Initially, both have equal number of nuceli. After n half-lives of `A`,rates of disintegaration of both are equal. The value of `n` is .A. 1B. 2C. 4D. All of these

There are two radioactive substance `A` and `B`. Decay consant of `B`

1.	There are two radioactive substance `A` and `B`. Decay consant of `B` is two times that of `A`. Initially, both have equal number of nuceli. After n half-lives of `A`,rates of disintegaration of both are equal. The value of `n` is .A. 1B. 2C. 4D. All of these
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The binding energy per nucleon number for deutron `H_(1)^(2)`and helium ` He_(2)^(4)` are `1.1 MeV` and `7.0 MeV` respectively . The energy released when two deuterons fase to form a belium nucleus `He_(2)^(4)` is ……..A. `2.2MeV`B. `23.6MeV`C. `28.0MeV`D. `30.2MeV`
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There are two radioactive substance `A` and `B`. Decay consant of `B` is two times that of `A`. Initially, both have equal number of nuceli. After n half-lives of `A`,rates of disintegaration of both are equal. The value of `n` is .A. 1B. 2C. 4D. All of these

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