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Monday, 1 June 2015

jee_main advance ,about (SI unit) system international

         The  international system of units

The si unit was established by the 11th general conference of weight and measures
          In the system international , there are
Seven fundamental quantities. And 3 supplymentary.
Quanties are mass,length, time,electric current, temperature, amount of substance and luminous intensity


          

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