science
Grade6
Easy

Question

3 x 108  m/s is the __________ of light.

  1. Energy
  2. Mass
  3. Force
  4. Speed

hintHint:

The speed of light in air is 3×108m/s.

The correct answer is: Speed


    • The speed of light in air is 3×108m/s.
    • The speed of light is more in a vacuum than in a medium.
    • The speed of light decrease as the density of the medium increase

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