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6.3 Nuclear equations and decay

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Question 61

A student is investigating radioactivity in a physics lab. She removes the radioactive source from the room and places it in its lead-lined box in a secure store. She then resets the Geiger-Muller (GM) tube and counter to zero.

After switching the counter back on and waiting for 5 minutes, she notices that it still registers a small number of counts.

Give one reason why the GM counter still registers a reading when the radioactive source has been removed.

[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 61

After switching the counter back on and waiting for 5 minutes, she notices that it still registers a small number of counts.

Give one reason why the GM counter still registers a reading when the radioactive source has been removed.

[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.