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Which of the following has the highest velocity?

10/28/2018 0 comentarios
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Q. Which of the following has the highest velocity?
  1. Cosmic rays
  2. Light
  3. Electron
  4. Supersonic wave
Answer: Light

The speed of light in a vacuum is defined to be exactly 299,792,458 m/s (approx. 186,282 miles per second). The fixed value of the speed of light in SI units results from the fact that the metre is now defined in terms of the speed of light. All forms of electromagnetic radiation move at exactly this same speed in vacuum.
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