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6.3 Nuclear equations and decay

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Question 64

A quality control technician uses a scintillation counter to monitor the beta radiation emitted by a sample of potassium chloride. Constant background radiation has already been accounted for and subtracted from the readings.

The table below shows five consecutive counts recorded over identical 5-second intervals.

Interval	Recorded count
1st	412
2nd	385
3rd	421
4th	398
5th	409

Explain how the data in the table demonstrates that radioactive decay is a random process.

[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

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6.3 Nuclear equations and decay

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Question 64

The table below shows five consecutive counts recorded over identical 5-second intervals.

Interval	Recorded count
1st	412
2nd	385
3rd	421
4th	398
5th	409

Explain how the data in the table demonstrates that radioactive decay is a random process.

[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.