Definition 1
Physics the branch of science which deal with the study of properties of matter energy and their mutual relation ship
Definition 2
Physics the branch of science which deal with the study of mass energy time and space
Definition 3
Physics the branch of science which deal with the study of behavior of matter in the language of mathematics
Origin
Physics is the Greek word which means the study of matter
Matter
Any thing which have mass and occupy space is called matter (OR) In 1905 Einstein defined matter as a condensed from of energy according to his mass energy relation
Where
E= energy
m= mass
c= speed of light=299792458 m/s
Energy
The ability of a body to do work is called energy (OR) energy is a agent due to which change occur in universe Relationship
In physics we study the mutual relation between matter and energy according to Einstein to mass energy relation (equation-1) mass can be converted to energy and energy can converted to mass
FOR EXAMPLE
1) CAR(matter) + PETROL(energy) =MOTION(Physics)
2) REFRIGERATOR(matter) + ELECTRICITY(energy) = COOLING(Physics)
3) COMPUTER(matter) + ELECTRICITY(energy) =PICTURE/SOUND(Physics)
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