IB Physics SL E 3 13 Background Radiation Questions
Correct SL radioactive measurements for background radiation, then calculate source activity or half-life from the net count rate.
- Syllabus
- First assessment 2025
- Course
- Physics SL
- Level
- SL
Exam points
- Effect of background radiation on count rate; correct count rate for background radiation.
IB Physics SL E 3 13 Background Radiation Questions question 1
An experiment is carried out to determine the count rate, corrected for background radiation, when different thicknesses of copper are placed between a radioactive source and a detector. The graph shows the variation of corrected count rate with copper thickness.
Outline how the count rate was corrected for background radiation.
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