Q. Define Physics and its main branches.

 Physics

            Physics is the branch of science which observes the nature represents it mathematically and conclude with the experiment. The word Physics is derived from Ancient Greek ‘physicos’ meaning ‘knowledge of nature’

 BRANCHES OF PHYSICS

 The main branches of Physics are as follows.

 1.    Mechanics

This branch of physics is mainly concerned with the laws of motion and gravitation.

 2.    Thermodynamics

Thermodynamics deals with heat and temperature and their relation to energy and work.

 3.    Electricity

Electricity is the study of properties of charges in rest and motion.

 4.    Magnetism

Magnetism is the study of magnetic properties of materials.

 5.    Atomic Physics

Atomic physics deals with the composition structure and properties of the atom.

 6.    Optics

Optics studies physical aspects of light and its properties with the help of optical instruments.

 7.    Sound

Sound is the study of production, properties and applications of sound waves.

 8.    Nuclear physics

Nuclear physics deals with the constituents, structure, behavior and interactions of atomic nuclei.

 9.    Particle physics

Particle Physics studies the elementary constituents of matter and radiation, and the interactions between them.

 10. Astrophysics

The study of celestial objects with the help of laws of physics is known as Astrophysics.

 11. Plasma physics

The study of ionized state of matter and its properties is known as Plasma Physics.