CAIE IGCSE Physics 5.2.1.1 What is meant by background radiation
Practise defining background radiation and using detector readings or graphs to identify the count rate present without the source.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- state background radiation as radiation always present in the environment
- read a decay graph to determine the background count rate in counts/s or counts/min
- explain detector readings without a source by referring to environmental radiation
5.2.1.1—What is meant by background radiation question 1
[Maximum number: 1]
In a laboratory a radiation detector displays a count rate of 16 counts/minute due to background radiation.
State what is meant by background radiation.
(radiation) always present/due to environment/in absence of radioactive sample/natural (radiation)
B1
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