What is physics ? PHYSICS is generated by Greek language the word FUSIS means "to know". Initial day Physics also known as Natural Science . In daily life many phenomenon are like- sun rise , change in season,Solar eclipse ,Lunar eclipse etc. ☝ In nature two object are present - Matter and Energy Energy= Mass x (velocity of light in vacuum )2 Types of Physics - Physics mainly divided in to two parts -(1) Macroscopic (2) Microscopic According to Macroscopic Physics are five parts (1) Mechanics (2) Thermodynamics (3) Optics (4) Oscillation and waves (5)Electrodynamics According to microscopic Physics only one parts (1) Nuclear physics