The best shield against X-rays to absorb it is
Correct answer: A. Lead
- A. Lead
- B. Steel
- C. Iron
- D. Copper
Explanation
Lead is commonly used as a shield against X-rays due to its high density and high atomic number.
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About Biological and Medical Uses of Radiation
Radiation in medicine includes X-rays and gamma rays for imaging, radioactive tracers for diagnosis, and controlled radiation for destroying cancerous tissue. The topic also covers CT scans, PET imaging, radiotherapy, sterilisation, half-life and dosage, alongside biological damage, shielding and the need to balance diagnostic or therapeutic benefit against exposure.
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