X-rays _ cause damage to living tissues. As X-rays are absorbed in tissues, they break molecular bonds and create reactive free radicals (such as H and OH).
Correct answer: B. Photons
- A. Neutrons
- B. Photons
- C. Electrons
- D. Neons
Explanation
X-rays emit photons that cause damage to living tissues. As X-rays are absorbed in tissues, they break molecular bonds and create reactive free radicals (such as H and OH).
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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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