Question detail
In which unit is activity measured?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and nuclear radiation
Question
- A. Joules
- B. Becquerels
- C. Coulombs
- D. Watts
Answer
Becquerels
Explanation
Activity is defined as the number of decay events per second and is measured in becquerels (Bq).
Common mistake
Misunderstanding Count Rate
Students often confuse count rate with total counts over time, thinking it represents the total number of counts detected rather than the rate at which counts are detected.
Emphasize that count rate is defined as the number of counts detected per second or per minute, and practice converting total counts into a rate by dividing by the time period.
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