Branches of physics are the subjects studied within the scope of physics. The subject physics can be defined as the branch of science which deals with the study of properties of matter and energy along with the interaction between them is undertaken. Physicists have divided the subject into various branches and each branch has acquired a title of a full subject in modern days. Physics is one of the most important subjects of all science, therefore the branches of science have evolved to understand each and every underlying aspect of the physical world.
Physics can be classified into various branches but classical physics is mainly concerned with energy and matter. The traditional branches of classical physics are Optics, Acoustics, Electromagnetics, and Classical mechanics. With the rapid development of physics, the scope of the subject is growing so large that it is not possible to cover physics under the above branches. A number of main branches of physics are discussed below.