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Physics Theories - Branches and Laws with Respective Fields

VSAT 2022

List of Basic Physics Relations - Class 11 and Class 12

Last updated date: 18th Mar 2023
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Physics contains a wide range of ideas and equations. Also, everything we know about the physical world can be summarised in just five theories, which deserve to be called the great theories of Physics. Each theory is a framework of ideas and equations that have been tested and proven by experiments. The scientific community is constantly validating these theories over time. In this article, we’ll discuss the Physics theories, how many types of Physics fields are categorised, and what are the main branches of Physics.

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Branches of Physics List

We have mentioned below the branches of Physics list. Check these branches of Physics with examples and their respective fields to develop a thorough understanding of the concepts!



Standard Model

Nuclear Particle Physics

Quantum field theory

Quantum electrodynamics

Quantum chromodynamics

Electroweak theory

Effective field theory

Lattice field theory

Lattice gauge theory

Gauge theory


Grand unification theory

Superstring theory


Quantum optics

Optical Physics

Quantum chemistry

Atomic and molecular Physics

Quantum information science

BCS theory

Condensed matter Physics

Bloch wave

Density functional theory

Fermi gas

Fermi liquid

Many-body theory

Statistical Mechanics

Big Bang


Cosmic inflation

General relativity

Newton's law of universal gravitation

Lambda-CDM model


Newton's Law of universal gravitation


Newton's Laws of motion

Ampère's circuital law

Current Electricity

Birch's law


Bell's theorem

Quantum mechanics

Beer–Lambert law


Avogadro's law


Boltzmann equation

Boyle's law

Coulomb's law

Electrostatics and Electrodynamics

Doppler effect


Theory of relativity (Einstein)

Modern Physics

Faraday's law of induction


Gauss's law

Mathematical Physics

Pascal's law

Fluid statics and dynamics

Planck's law


Raman scattering


Vlasov equation

Plasma Physics

Important Laws of Physics

We have provided the important laws of Physics in the table below. Every law from the table is from Physics theory.

Laws of Physics

Lambert's Cosine Law

Kelvin Planck Statement

D’Alembert’s Principle

Clausius Statement

Law of Conservation of Mass

Fourier’s Law

Hubble’s Law

Bell’s Theorem

Boltzmann Equation

Lagrangian Point

Beer-Lambert Law

Maxwell’s Relations

Van Der Waals Equation

Carnot’s Theorem

Fermi Paradox

Helmholtz Equation

Helmholtz Free Energy

Fick’s Law of Diffusion

Raman Scattering

Wien’s Law

Dirac Equation

Mach Number

Coulomb’s Law

Avogadro’s Hypothesis

Law of Conservation of Energy

Archimedes’ Principle

Biot-Savart Law

Faraday’s Law

Ampere’s Law

Faraday’s Laws of Electrolysis

Planck’s Equation

Kirchhoff’s law

Kirchhoff's Second Law

Newton’s law of universal gravitation

Maxwell’s Equations

Bernoulli’s Principle

Electric Potential

Zeroth Law of Thermodynamics

Gauss’ Law

First law of thermodynamics

Lenz’s Law

Wien's Displacement Law

Ohm’s Law

Law of Equipartition of Energy

Joule’s Laws

Laws of reflection

Brewster’s Law

Radioactive Decay Law

Bragg’s Law

Murphy’s Law

Doppler Effect

Einstein Field Equation

Casimir Effect

Stefan-Boltzmann Law

Moseley’s Law

Superposition Principle

Newton’s Laws of Motion


Laws of Friction

Heisenberg Uncertainty Principle

Hooke’s Law

Wave-Particle Duality

Snell’s law

Fermat’s Principle

Boyle’s Law

Huygens’ Principle

Pascal’s Law

Ideal Gas Law

Equivalence Principle

Joule-Thomson Effect

Curie-Weiss Law

Law of Conservation of Linear Momentum

Curie’s Law

Wiedemann-Franz Law

Newton’s Second law of motion

Newton’s First law of motion

Newton’s Third law of motion

Continuity Equation

Chandrasekhar Limit

Kirchhoff’s First Law

Inverse Square Law

Newton’s Law of Viscosity

Advantages of Learning Laws and Branches of Physics with Examples

Physics is one of the natural science disciplines that study the different aspects of matter and energy. By understanding Physics theory, its laws and branches with examples we will understand mechanics, electricity, magnetism, heat, sound, light and other radiation, and the structure of atoms which are the major topics in this discipline. Also, Physics theories explain the evolution, structure, and functions of various universe elements.

Physics is a broad field of scientific study that includes various concepts, principles, and theories. We have discussed some of the important branches and laws of Physics that a student should be familiar with in this article. I hope these explanations are useful for students.

FAQs on Physics Theories - Branches and Laws with Respective Fields

1. Where can I get a list of all Physics laws PDF?

You can read the important laws and branches of Physics from Vedantu. Read the entire article to know more about Importance of learning laws and branches of Physics.

2. What are the 7 branches of Physics? How many types of Physics branches are categorised?

7 important branches of Physics are as follows:

  • Classical Physics

  • Modern Physics

  • Nuclear Physics

  • Atomic Physics

  • Biophysics

  • Mechanics

  • Acoustics

Apart from these there are several other branches in Physics as well.

3. How many types of physicists are there in the world?

We have two types of physicists in the world, Experimental physicists and  Theoretical physicists. Experimental physicists specialise in the observation of natural phenomena as well as the development and analysis of experiments, while theoretical physicists specialise in theoretical Physics which means mathematical modelling of physical systems to rationalise, explain, and predict natural phenomena.

4. What are the four basic pillars of Physics?

The four basic pillars of Physics are as follows:

  • Classical Mechanics

  • Thermodynamics

  • Classical Electrodynamics

  • Quantum Mechanics

5. What is the importance of Physics?

Physics is undoubtedly important in our everyday lives. All the answers to how we walk, work, and operate objects are hidden in Physics. Physics is used in electricity, transportation, communication, computers, and more.

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