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What is a medical use of Gamma rays?

  1. Improving vision

  2. Killing cancerous cells

  3. Muscle relaxation

  4. Skin rejuvenation

The correct answer is: Killing cancerous cells

Gamma rays are a form of high-energy electromagnetic radiation that can penetrate deeply into tissues. One of the significant medical uses of gamma rays is in radiation therapy to kill cancerous cells. Gamma rays are utilized to target and destroy cancer cells, thus helping to shrink tumors and treat various types of cancer. This makes option B the correct answer. The other options are not correct because: A. Improving vision is typically done through eye surgeries or corrective lenses, not gamma rays. C. Muscle relaxation is often achieved through medication or physical therapy, not gamma rays. D. Skin rejuvenation treatments usually involve procedures like laser therapy or chemical peels, not gamma rays.