0.02+ 0.00+0.01+0.01004-0.04THEORYWhat is the need for measurement of a physicquantity?What is meant by unit of a physical quantity?State different types of systems of units.What is S.I. system of units? Explain its nond

0.02+ 0.00+0.01+0.01004-0.04THEORYWhat is the need for measurement of

1.	0.02+ 0.00+0.01+0.01004-0.04THEORYWhat is the need for measurement of a physicquantity?What is meant by unit of a physical quantity?State different types of systems of units.What is S.I. system of units? Explain its nond
Answer» <p>1. There is aneed for measurementinphysical quantity. Without it , how can you define things. Bymeasuringaphysical quantitywe define the properties of a material which thephysical quantityis associated with. For example, distance, speed, mass, pressure, force, momentum, energy.</p> <p>(i) They aredefinedas theunitsof fundamentalquantities. They are independent of each other and are expressed by writing the letter of the fundamentalquantityin parentheses, e.g., Fundamentalunitsof mass, length and time are [M], [L], [T] respectively</p> <p>The current international standard metric system is the International System of Units (Système internationald'unitésor SI) </p><p>It is an mks system based on the metre, kilogram and second as well as thekelvin, ampere, candela, and mole. The SI includes two classes of units which are defined and agreed internationally.</p>