Monday, August 17, 2009

What is the Speed of Light ??

answer it by Comment
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2 comments:

  1. qamar ch.August 17, 2009 at 4:50 AM

    one metre is the distance travelled by light in vacuum during a time of 3.33x10 -09

    ReplyDelete
  2. althafAugust 17, 2009 at 5:47 AM

    3 x 10^8 m/s

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