Question detail
Which of the following materials is effective in shielding against alpha radiation?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and nuclear radiation
Question
- A. Lead
- B. Plastic
- C. Paper
- D. Glass
Answer
Paper
Explanation
Alpha particles can be stopped by a sheet of paper or even the outer layer of human skin, making paper an effective shield against alpha radiation.
Common mistake
Alpha Radiation Danger
Students often think that alpha radiation is not harmful when inside the body because it cannot penetrate the skin.
Emphasize that alpha particles are highly ionising and can cause significant damage to internal tissues, making them particularly dangerous when ingested or inhaled.
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