Class 12 Physics Electromagnetic Waves X-Rays


  • X-Rays are produced by bombarding a metal target by high energy electrons.
  • It is very important diagnostic tool.
    • X-Rays have lesser wavelengths as compared to all other waves.
    • Because of this X-Rays can easily penetrate inside the skin (low density material). It either gets reflected or absorbed by the high density material (like bone).
    • In any X-Ray, bones look darker and lighter area is skin.
  • It is also used for cancer treatment.
    • In cancer there is unwanted growth of the cells.
    • In order to treat cancer the abnormal growth of cells should be stopped.
    • The X-Rays have the ability to damage the living tissue.

This is how it helps in the treatment of cancer

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