Practice - Decay Law and Half-Life
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Practice Questions
Test your understanding with targeted questions
What is the decay law equation?
💡 Hint: Look for the equation that represents the rate of decay.
Define half-life.
💡 Hint: Think about the meaning of 'half' in the context of decay.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the decay constant (λ) represent?
💡 Hint: Think about what rate implies in the context of decay.
True or False: The half-life of a substance increases as its decay constant decreases.
💡 Hint: Consider what happens to time as the rate decreases.
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Challenge Problems
Push your limits with advanced challenges
A sample originally contains 200g of a radioactive isotope with a half-life of 10 years. How much will remain after 40 years?
💡 Hint: Calculate how many half-lives fit into 40 years.
If a substance has a decay constant of 0.2 and its initial activity is 100 Bq, what is the activity after 10 units of time?
💡 Hint: Use the decay formula for activity over time.
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Reference links
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