A student conducts an experiment using an α. particle source. When considering safety precautions, what can be assumed to be the maximum range of an α. particle in air?
Correct answer: B. Between 5 mm and 200 mm
- A. Between 0 mm and 5 mm
- B. Between 5 mm and 200 mm
- C. Between 200 mm and 500 mm
- D. Between 500 mm to 1000 mm
Explanation
Alpha particles are not very penetrating and have short, well-defined range in air, typically on the order of few centimeters (few tens of millimeters). This is because they interact strongly with air molecules, quickly losing energy.
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