Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of ________________?
Correct answer: A. Lead
- A. Lead
- B. Cloth
- C. Paper
- D. Aluminium
Explanation
Lead has a high density and strongly absorbs X-rays, which is why it is used for radiation shielding. Paper, cloth, and thin aluminium are much less effective barriers.
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