Gce Model Questions Vol1 2022 Physics Question 36
Practice objective / multiple choice question 36 from the 2022 Gce Model Questions Vol1 Physics examination.
A sample contains the isotopes \(^{235}\text{U}\) (half‑life \(7.0\times10^{8}\) yr) and \(^{238}\text{U}\) (half‑life \(4.5\times10^{9}\) yr). After exactly \(1.0\times10^{9}\) yr the activity of \(^{235}\text{U}\) is observed to be twice the activity of \(^{238}\text{U}\). Determine the initial ratio of the number of atoms of \(^{235}\text{U}\) to \(^{238}\text{U}\).
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About This Question
This is Gce Model Questions Vol1 2022 Physics Question 36. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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