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2) What is unit? What is SI unit of length ? |
Answer» The metre, symbol m, is the SI unit of length. It is DEFINED by taking the fixed NUMERICAL value of the speed of LIGHT in vacuum C to be 299792458 when expressed in the unit m s−1, where the SECOND is defined in terms of ∆νCs."hope it helps you༶•┈┈⛧┈♛MissMad♛┈⛧┈┈•༶ |
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