CAIE A-Level Physics A2 23.2 Radioactive Decay Questions
Practise analysing random decay, activity, decay constant, half-life and exponential equations or graphs to extract radioactive quantities.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- A2
Exam points
- interpret count-rate fluctuations and explain radioactive decay as spontaneous and random
- use A = ?N to calculate activity, decay constant or number of radioactive nuclei
- define half-life and use ? = 0.693/t�
- use and interpret the exponential decay relationship x = x?e??t for activity, count rate or undecayed nuclei
- extract decay quantities from radioactive-decay graphs and data
Covered syllabus points
23.2.1—Fluctuations in count rate provide evidence for the random nature of23.2.2—Radioactive decay is both spontaneous and random23.2.3—Activity and decay constant, and recall and use A = λN23.2.4—Half-life23.2.5—Λ = 0.693 / t 1/223.2.6—The exponential nature of radioactive decay, and sketch and use the
