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IB Physics HL E 3 6 Random Radioactive Decay Questions

Explain HL radioactive decay as random and spontaneous, distinguishing unpredictable individual events from predictable exponential behaviour in a sample.

Syllabus
First assessment 2025
Course
Physics HL
Level
HL

Exam points

  • define random decay as the inability to predict which nucleus or when an individual nucleus will decay
  • define spontaneous decay as a process not altered by external conditions such as temperature or pressure
  • distinguish unpredictable individual decays from the predictable exponential decay rate of a large sample

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Study E.3.6—Random radioactive decay conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Physics HL E 3 6 Random Radioactive Decay Questions question 1

[Maximum number: 2]

Radioactive decay is said to be "random" and "spontaneous". Outline what is meant by each of these terms.

Random:
Spontaneous:

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