Hint: This question is from chapter “units and measurement”. After giving proper definition of units, classify them into different categories like fundamental units and derived units and give examples of each.In measuring any quantity, units are always used. Therefore units have wide applications in our day to day life. For e.g. in measuring milk, oil etc litre (l) is used as a unit or in measuring sugar, floor, fruits etc kilogram or gram is used as a unit.Complete step by step solution: Unit: - Measurement of any physical quantity involves comparison with a certain basic, arbitrarily chosen, internationally accepted reference standard called unit. The result of a measurement of a physical quantity is expressed by a number (or numerical measure) accompanied by a unit.For example, 5 kg In this 5 is numerical value and kg is the unit.Classification of units: -Units are further classified into two categories, Fundamental units Derived unitsThe units for the fundamental or base quantities...
