Sterilization of surgical instruments medical supplies and bandages can be done by exposing them to a beam of_______________?
Correct answer: C. γ-rays
- A. α-rays
- B. β-rays
- C. γ-rays
- D. B and C have equal antiseptic propertie
Explanation
Gamma rays have very high penetrating power, so they can pass through packaged surgical instruments, medical supplies and bandages to destroy microorganisms. Alpha particles are stopped easily, and beta rays are less suitable for penetrating thick or packaged materials. The likely trap is option d, which treats beta and gamma rays as having equal sterilizing usefulness.
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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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