O-LevelPhysicsNuclear Physics5054/11 · May/June 2020 · Q391 Mark

¹⁴₆C is a natural radioactive isotope of carbon and is present in all living things. It has a half-life of 5700 years. How old is a bone that is found to have only ¹₄ of the natural proportion of ¹⁴C?

A5700 years

B11 400 years

C17 100 years

D22 800 years

✓ Correct answer

B: 11 400 years

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Topic: Nuclear Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2020 Paper 1 Variant 1, question 39.

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