Physics GCSE
count-rate
What count-rate means in Physics GCSE, as defined for AQA.
Definition of count-rate
Check what you remember
Read the wording for your board, then hide it and explain count-rate in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The number of decays recorded each second by a detector such as a Geiger-Muller tube.
Topics that use count-rate
- Radioactive decay and nuclear radiation (AQA GCSE)
Related terms
- activity
- background radiation
- choosing a half-life
- gamma ray
- independence from conditions
- ionising power
- neutron emission
- penetration
Using count-rate 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.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Physics GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge