Question : How many fundamental SI units are there?
Option 1: 4
Option 2: 7
Option 3: 5
Option 4: 9
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Correct Answer: 7
Solution : The correct answer is 7 .
SI basic units, often referred to as fundamental units, serve as the foundation for the system of units and can be used to derive other units. Seven SI fundamental units exist. These units mutually form base units and are interconnected.
• Seven fundamental units exist, a mole for substance, kilogramme for mass, second for time, metre for length, ampere for electric current, candela for luminous intensity and kelvin for thermodynamic temperature.
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