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Question

What is the speed of light?


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Solution

Step 1. Speed of light

  1. Speed of light is defined as the speed at which light propagate through medium.
  2. It is considered a fundamental constant of nature.
  3. The speed of light in free space has the same value in all inertial frames of reference.
  4. The mathematical expression for speed of light is c=f×λ, where f= frequency of light, λ= wavelength of light, c= speed of light.


Step 2. Value of speed of light

The speed of light is 2.997×108m/s~3×108m/s.


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