Physics A-Level
Exponential decay law
What Exponential decay law means in Physics A-Level, as defined for OCR.
Definition of Exponential decay law
Check what you remember
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Reference: OCR
The rate of decay is proportional to the number of undecayed nuclei, leading to N = N₀e^(−λt).
Topics that use Exponential decay law
- 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 Exponential decay law in the exam
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