Units (Radioactivity)
1 mark · EasyName the unit that should be used for the distance between a radioactive source and a detector in a practical experiment.
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centimetre (cm)
Also accept: cm; centimetres
Common mistakes: metre; second; Bq
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Marking points
B1 · 1 mark · States 'centimetre (cm)' as the appropriate unit of distance.
Worked solution
Centimetres (cm) should be used to measure the distance between a source and a detector.