NCERT Based Notes by an NITian

1. PHYSICAL WORLD 1.1 WHAT IS PHYSICS? Science: A systematic study of natural phenomena and use the knowledge so gained to predict, modify and control the phenomena is called science. Scientific Method: Scientific Method is a series of steps to gather knowledge about the natural phenomena. The several involved interconnected steps are: systematic observations, controlled experiments , qualitative and quantitative reasoning , mathematical modelling , prediction and verification or falsifying of theories . Physics: A branch of science that deals with the study of the basic laws of nature and their manifestation in different natural phenomena is called physics. Principal Thrusts in Physics: (i) Unification: Attempting to explain diverse physical phenomena in terms of a few concepts and laws is known as unification. For example, same law of motion and law of gravitation describes the mechanics of both celestial and terrestrial doma...

1. PHYSICAL WORLD 1.1 WHAT IS PHYSICS? Science: A systematic study of natural phenomena and use the knowledge so gained to predict, modify and control the phenomena is called science. Scientific Method: Scientific Method is a series of steps to gather knowledge about the natural phenomena. The several involved interconnected steps are: systematic observations , controlled experiments , qualitative and quantitative reasoning , mathematical modelling , prediction and verification or falsifying of theories . Physics: A branch of science that deals with the study of the basic laws of nature and their manifestation in different natural phenomena is called physics. Principal Thrusts in Physics: (i) Unification: Attempting to explain diverse physical phenomena in terms of a few concepts and laws is known as unification. For example, same law of motion and law of gravitation describes the mechanics of both celestial and ...