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CBSE Class 11-science Answered

The metre is defined as the distance travelled by light in 1/299729458 second. Why didn't people choose some easier number such as 1/300000000 second ? Why not 1 second ?
Asked by Veneet Suri | 29 Apr, 2013, 10:33: PM
Expert Answer
Because speed of  light  is a constant quantity and it remains unchanged wrt any other frame of reference.
Exact speed of light is 299729458m/s.You can take it as 300000000m/s but the measure will not be accurate.
Answered by | 30 Apr, 2013, 11:37: AM
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