Question

(c) A sample of carbon-14 is contained in a thin aluminum container of thickness 0.2 mm. Radiation from the sample is detected outside the container. When the thickness of the aluminum is increased to 6 mm, no radiation from the sample is detected outside the container.
(i) State the type of radiation which is stopped by increasing the thickness of the aluminum.(1)
(ii) Explain how you know that the sample does not emit one other type of radiation. (2)​

Answer 1

Answer:

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Answer 2

Answer:

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