CAIE A-Level Physics 23.2.4 Half-Life
Practise defining radioactive half-life as the time for activity or undecayed nuclei to halve and applying repeated halving to source data.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- A2
Exam points
- define the half-life of a radioactive isotope as the time for its activity or number of undecayed nuclei to halve
23.2.4—Half-life question 1
The variation with time t of the measured count rate in (a) is shown in Fig. 12.1.
Fig. 12.1
Use Fig. 12.1 to determine the half-life of the radioactive isotope in the source.
half-life = hours
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