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Question

What is the speed of light?


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Solution

Speed of light

  1. Speed of light or speed of light in vacuum is the rate of change of displacement of light.
  2. It is a universal constant that is important in many fields of physics.
  3. The exact value of the speed of light in vacuum is 299792458ms-1.
  4. While doing calculations, it is often assumed to be 3×108ms-1
  5. Light is the fastest moving thing on earth.
  6. All forms of electromagnetic radiations travel in the speed of light.

The speed of light is 3×108ms-1.


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