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- 1. Multiple Choice
Which of these is a use of alpha radiation?
Sterilising food
Smoke detectors
Monitoring paper thickness
Industrial tracers
- 2. Open Ended
Explain why alpha radiation is not suitable for use in monitoring paper thickness.
- 3. Fill in the Blank
__________ radiation is used in radiotherapy.
- 4. Multiple Choice
Radioactive sources used in smoke detectors must have...
a long half-life
a short half-life
- 5. Multiple Choice
Gamma sources used for sterilisation should have...
a high activity
a low activity
a long half-life
a short half-life
- 6. Multiple Choice
Radioactive sources used as industrial or medical tracers should have...
a long half-life
a short half-life
- 7. Fill in the Blank
Alpha particles in a smoke detector ionise the air particles in the detector. This causes a __________ to flow.
- 8. Open Ended
Explain why gamma radiation is not suitable for use in smoke detectors.
- 9. Open Ended
Explain how alpha radiation is used in a smoke detector.
- 10. Open Ended
Explain how beta radiation is used to monitor paper thickness.
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