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Chemistry · Some Basic Concepts of Chemistry
हिन्दीIn the modern SI system, the unit of mass (kilogram) is defined by fixing the numerical value of which fundamental physical constant along with the definitions of metre and second?
Correct answer · Option 2
Planck's constant \( h \)
Explanation
The kilogram is defined by taking the fixed numerical value of Planck's constant \( h \) to be \( 6.62607015 \times 10^{-34} \text{ Js} \).
