Units and measurements includes definition and fundamental quantities.pptx

Some definitions, Physical quantities, fundamental quantity are discussed in PPT

1. Basic Science (Physics) Presented by Dr Sarika P Patil 1 Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

2. Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji) 2 Outline Revision of last part Physical quantity Fundamental quantity and its unit Requirements of an good unit Derived quantity and its unit

3. 3 Physics - All natural things which are occurs around us is called Physics. Macroscopic - We can see the object which is present in the nature. Microscopic - We can’t see the objects which are present in nature. Unit - The standard reference used for measurement of any physical quantity is called as unit. Revision Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

4. 4 Definition Physical properties of an object by measurement are called as physical quantity. It consists of magnitude (the amount ) and units. Example – Sugar weight is 2kg . 2 is magnitude, kg is unit and 2kg is quantity. There are two types of physical quantities: 1) Fundamental physical quantity 2) Derived physical quantity Physical quantity Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

5. 5 Fundamental Physical Quantity- The physical quantity which does not depend on any other physical quantity for their measurement, is called fundamental physical quantity. There are six fundamental physical quantities: Length, mass, time, temperature, electric current, and Luminous Intensity. Fundamental quantities and its units Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

6. 6 Fundamental Units- The unit of the fundamental physical quantity which does not depend on any other fundamental units is called fundamental unit. There are six fundamental units: meter, kilogram, second, degree kelvin, ampere, and candela. Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

7. 7 Serial No. Fundamental Physical Quantity Units of Fundamental Physical Quantity Symbol of Units of Fundamental Physical Quantity 1 Length meter m 2 Mass kilogram kg 3 Time second s 4 Temperature kelvin o K 5 Electric current ampere A 6 Luminous Intensity candela cd Fundamental quantities, units and symbols Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

8. 8 Physical Quantity - Physical properties of an object by measurement are called as physical quantity. Fundamental Physical Quantity - The physical quantity which does not depend on any other physical quantity for their measurement, is called fundamental physical quantity. Fundamental Units- The unit of the fundamental physical quantity which does not depend on any other fundamental units is called fundamental unit. Revision Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

9. 9 Multiple Choice Questions (MCQs) Identify the unit of measure length ……… meter b) kelvin c) kilogram d) None 2. Choose examples of fundamental/base quantity…. Mass and area b) mass and length c) area and length d) none 3. A physical quantity is …. Weight b) length c) thinking d) stress 4. Fundamental quantity measured according to……. Selected or reference standard b) local standard c) global standard d) any unit Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

10. 10 5. Unit of mass is…….. kilometer b) kelvin c) second d) kilogram 6. Physical quantities are also known as ….. Base quantity b) derived quantity c) professional quantity d) energetic quantity 7. Unit of temperature ……… meter b) kilogram c) candela d) kelvin 8. Physical quantity consist of …… Number magnitude b) symbolic magnitude c) analogical magnitude d) none Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)

11. 11 9. Unit of intensity……. candela b) kelvin c) meter d) second 10. Physical properties of an object by measurement are called as……….. physical quantity b) derived quantity c) both a and b d) none 11. The physical quantity which does not depend on any other physical quantity is called as …… Fundamental physical quantity b) derived quantity c) Both a and b d) none Sharad Institute of Technology College of engineering, Yadrav (Ichalkaranji)