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7 This question is about the radiation dose received from a variety of sources. The typical dose equivalent from natural sources is about 2000 mSv

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7 This question is about the radiation dose received from a variety of sources. The typical dose equivalent from natural sources is about 2000 mSv per year. The risk of developing cancer is about 5% per sievert. a Taking the population of Britain as 60 million, estimate by calculation the number of cancer cases due to natural sources in a year. (2 marks)

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