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Q: Which of the following are electromagnetic waves ?
  • A. Alpha rays
  • B. Audible waves
  • C. X-rays
  • D. β-rays
Correct Answer: Option C - X-rays are a form of electromagnetic radiation, similar to visible light. Unlike light, however, X-rays have higher energy and can pass through most objects, including the body. X-rays radiation is referred to as Rontgen radiation, after the German scientist Wilhelm Conrad Rontgen, who discovered it on November 8, 1895. X-rays have a wavelength in the range of 0.01–10 nm.
C. X-rays are a form of electromagnetic radiation, similar to visible light. Unlike light, however, X-rays have higher energy and can pass through most objects, including the body. X-rays radiation is referred to as Rontgen radiation, after the German scientist Wilhelm Conrad Rontgen, who discovered it on November 8, 1895. X-rays have a wavelength in the range of 0.01–10 nm.

Explanations:

X-rays are a form of electromagnetic radiation, similar to visible light. Unlike light, however, X-rays have higher energy and can pass through most objects, including the body. X-rays radiation is referred to as Rontgen radiation, after the German scientist Wilhelm Conrad Rontgen, who discovered it on November 8, 1895. X-rays have a wavelength in the range of 0.01–10 nm.