Cambridge AS & A Level Physics
23.2Radioactive decay
Radioactive decay in Cambridge AS & A Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic23 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 23.2.1Use count-rate fluctuations as evidence that decay is random.
- 23.2.2Recognise decay as spontaneous and random.
- 23.2.3Define activity and decay constant and use A = λN.
- 23.2.4Define half-life.
- 23.2.5Use λ = 0.693/t½.
- 23.2.6Sketch and use exponential decay for activity, undecayed nuclei or count rate.
Lessons
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Radioactive decay: activity, decay constant and half-life
55 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Radioactive decay into a strength.
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