Which one of the following radiations, all of 1 MeV energy, is the least penetrating?
belongs to book: Examination Questions and Answers in Basic Anatomy and Physiology|Martin Caon|| Chapter number:17.2| Question number:36
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Medicine
A: Alpha rays are doubly ionised helium nuclei, which, because of their large mass and double charge interact strongly with any matter through which they pass. They are able to travel a mere few centimetres in air and a fraction of a millimetre in solid matter.
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