CAIE A-Level Physics 23.2.3 Activity and Decay Constant
Practise defining activity and decay constant, using A = lambda N for radioactive samples and interpreting activity or count-rate graphs.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- A2
Exam points
- define activity and decay constant and interpret their physical meaning
- use A = λN to calculate activity, decay constant or number of radioactive nuclei
- interpret activity or count-rate graphs to extract radioactive quantities
23.2.3—Activity and decay constant, and recall and use A = λN question 1
[Maximum number: 2]
Define radioactive decay constant.
probability of decay (of a nucleus)
M1
per unit time
A1
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