Which one of the following is the unit of activity of a radioactive source?

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Q: 35 (NDA-II/2008)

Which one of the following is the unit of activity of a radioactive source?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,22,14,5,22,8,1

keywords: 

{'radioactive source': [0, 0, 1, 0], 'unit': [0, 1, 5, 10], 'lux': [0, 0, 1, 0], 'activity': [3, 0, 1, 3], 'siemens': [0, 0, 2, 0], 'tesla': [0, 0, 1, 2], 'becquerel': [0, 1, 1, 0]}