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Define one light year & also give its relation with per second.

Asked by 22nd October 2013, 1:14 PM
Answered by Expert
Answer:
One light year is the distance travelled by light in one year.
 
The speed of light in vacuum is 3108 m/s.
 
Thus, the distance travelled by light is
 
 
Light year is a unit of distance and hence cannot be related to per second.
However, we can say that light travels 3108 metres per second.
Answered by Expert 23rd October 2013, 10:58 AM
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