Physics A-Level
Activity
What Activity means in Physics A-Level, as defined for OCR.
Definition of Activity
Check what you remember
Read the wording for your board, then hide it and explain Activity in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The number of nuclear decays per second, measured in becquerels (Bq).
Topics that use Activity
- Radioactivity (OCR A-Level)
Related terms
- Absorber
- Alpha decay
- Beta-minus decay
- Beta-plus decay
- Carbon-14 and half-life
- Corrected count rate
- Decay constant
- Experimental measurement of half-life
Using Activity in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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