Neco 2019 Physics Question 11
Practice objective / multiple choice question 11 from the 2019 Neco Physics examination.
An unstable isotope A has a half‑life of 30 min and isotope B has a half‑life of 2 h. Initially the sample contains unknown numbers of atoms N_A0 and N_B0. After 90 min the activity of isotope A has decreased to equal the activity of isotope B at that instant. Determine the ratio \(\frac{N_{B0}}{N_{A0}}\).
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About This Question
This is Neco 2019 Physics Question 11. It is one of the objective questions from the 2019 Neco Physics examination.
Difficulty level: Hard .
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