Waec Model Questions Vol1 2021 Physics Question 31
Practice objective / multiple choice question 31 from the 2021 Waec Model Questions Vol1 Physics examination.
A sample contains 1.0×10⁶ atoms of a radioactive isotope A (half‑life 30 min). A decays to isotope B, which in turn decays to a stable isotope C (half‑life of B = 10 min). Initially there is no B present. After exactly 1 hour, what is the activity of isotope B expressed in becquerels (Bq)?
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About This Question
This is Waec Model Questions Vol1 2021 Physics Question 31. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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