The Velocity of Light is

  1. 3 x 108 cm/sec
  2.  3 x 108 m/sec
  3.  3 x 108 km/sec
  4.  3 x 108 miles/sec
Manish Listener Asked on 21st June 2015 in Physics.
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Answer:  (2). 3 x 10^8 m/ sec.

The speed of light is denoted as ‘c’. its value is 299 792 458 m/s on rounding of figure value comes 3 x 10^8 m/s. it is universal physical constant. the speed of light is changed in the air or in water due to the refractive index of the mediums.

RE: The Velocity of Light is

The definition of light is that the distance travelled in metre by light in vacuum during a time interval of 1 / 299, 792, 458 of a second. the speed of light first recorded discussed by Aristotle . and the first real measurement of the speed of light came about in half century in 1676, by a Danish astronomer Ole Romer in Paris.

vijay Professor Answered on 16th July 2015.
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