Step 1: Understanding X-rays.
X-rays are a form of electromagnetic radiation, much like light, but with much shorter wavelengths. They are produced when high-energy electrons collide with matter, releasing energy in the form of electromagnetic waves.
Step 2: Explanation of each option.
- (A) moving electron: Incorrect. X-rays are not composed of moving electrons; rather, they are electromagnetic waves produced by the interaction of electrons with matter.
- (B) moving positive ions: Incorrect. X-rays are not made of ions but rather electromagnetic radiation.
- (C) moving negative ion: Incorrect. Similar to option (B), X-rays are not generated by ions but by electromagnetic radiation.
- (D) electromagnetic waves: Correct. X-rays are a type of electromagnetic wave, just like visible light, radio waves, and gamma rays.
Step 3: Conclusion.
X-rays are electromagnetic waves.