CBSE Class 9 Answered
define metre in term of wavelength of light?
Asked by | 14 Jul, 2008, 07:36: PM
Expert Answer
the standard metre is exactly equal to the 1650763.73 wavelenghts in vacuum, of the radiation from krypton isotope of mass 86.
Answered by | 15 Jul, 2008, 09:06: PM
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