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6.3 Nuclear equations and decay

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Question 41

An oncologist uses a gamma detector to monitor the activity of a localized iodine-131 source in a patient's thyroid gland. The detector records the number of gamma photons emitted over several distinct 30-second intervals to establish a baseline.

Explain why any subsequent single measurement of the photon count over a 30-second window is only an approximation of the true average activity at that moment.

[1]

Markscheme

6.3 Nuclear equations and decay Questions

GCSE
Physics
6.3 Nuclear equations and decay

90 exam-style questions on Edexcel GCSE Physics 6.3 Nuclear equations and decay. Each one has a worked solution and a mark scheme showing where the marks go.

6.3 Nuclear equations and decay

Question bank

6.3 Nuclear equations and decay

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Question 41

Explain why any subsequent single measurement of the photon count over a 30-second window is only an approximation of the true average activity at that moment.

[1]

Markscheme

6.3 Nuclear equations and decay Questions

GCSE
Physics
6.3 Nuclear equations and decay

90 exam-style questions on Edexcel GCSE Physics 6.3 Nuclear equations and decay. Each one has a worked solution and a mark scheme showing where the marks go.