Physics

The study of matter, its characteristics, such as its motion and behavior across space and time, as well as the associated amounts of energy and force, is covered in the scientific field of physics. One of the earliest fields of science is physics. With each new discovery in the actual world, we learn something new. As hypotheses are created and advancements are achieved over time, both the query and the solution alter.

What is Physics?

The underlying rules of the universe are understood and described using the study of physics. Starting from tiny particles that constitute matter to the massive forces that rule the cosmos, physics comprises of many topics and concepts. The word physics is made from the Greek word physikos meaning natural or physical.

New technologies are frequently made possible by improvements in physics. For example let us consider, our knowledge of physics and its subfields have led us to create goods such as television, computers, home appliances, and nuclear weapons. Similarly, improvements in thermodynamics have drastically affected the growth of industrialization, and improvements in mechanics have influenced the creation of calculus.

Branches of Physics

Various concepts are studied in the field of Physics. Physics is divided into categories based on the topics studied in those subfields. 

Mechanics

Mechanics study how matter, force, and motion are related to one another with respect to physical objects. The three branches of mechanics are :

• Statics, which studies forces acting on and inside a body when it is at rest, 
• Kinematics, which defines possible motions of a body or system of bodies,
• Kinetics, which explains or predicts the motion that will occur in a certain situation or specific condition.

 

Optics

The behavior and qualities of light, particularly how it interacts with materials and how to create devices that can either use or detect it, are the focus of the branch of physics known as optics. Visible, ultraviolet, and infrared light behavior is often described by the science of optics. Light has many properties in common with X-rays, microwaves, and radio waves because it is an electromagnetic wave.

 

Thermodynamics

The study of the interaction between heat, work, temperature, and energy is known as thermodynamics. Thermodynamics broadly refers to the process of moving energy from one location or form to another. The fundamental principle is that heat is a kind of energy that is equivalent to a specific quantity of mechanical labour.

 

Electromagnetism

The study of charge and the fields and forces it generates is known as electromagnetism. Two components of electromagnetism are electricity and magnetism. One of the four basic forces of nature is the electromagnetic force. In interactions between atoms and molecules, it is the dominating force. Electromagnetism can be referred to as a mixture of electrostatics and magnetism, two separate interrelated phenomena. Magnetism is an interaction that only happens between charged particles in relative motion, whereas electromagnetic forces happen between any two charged particles, generating an attraction between particles with opposing charges and repulsion between particles with the same charge. 

 

Atomic and Nuclear Physics

The atomic nucleus’ structure and the radiation that results from unstable nuclei are the subjects of this branch of physics. In addition to researching other types of nuclear matter, the study of atomic nuclei, their components, and their interactions is known as nuclear physics. Atomic physics, which examines the atom as its whole, including its electrons, should not be confused with nuclear physics.

 

Free Study Material for Physics

• Ac Generator  
• Acceleration due to Gravity
• Ampere’s Circuital Law 
• Amplitude, Time Period, and Frequency of a Vibration
• Angular Momentum in Case of Rotation About a Fixed Axis
• Angular Velocity and its Relation with Linear Velocity
• Applications and Limitations of Bernoulli’s Law
• Applications of Gauss’s Law 
• Atmospheric Pressure
• Atomic Masses and Composition of Nucleus 
• Atomic Spectra 
• Audible and Inaudible Sounds
• Average Velocity
• Balanced and Unbalanced Forces
• Behavior of Gas
• Bernoulli’s Equation
• Biot-savart Law 
• Braille System
• Buoyancy
• Capacitors and Capacitance 
• Centre of Gravity
• Centre of Mass
• Centripetal Acceleration
• Commercial Unit of Electrical Energy
• Commercial Unit of Energy
• Conductors and Insulators  
• Conservation of Momentum
• Contact and Non-Contact Forces
• Continuous Charge Distribution 
• Convection
• Coulomb’s Law 
• Couple
• Davisson and Germer Experiment
• Dielectrics and Polarisation 
• Diffraction
• Dispersion of Light
• Displacement Current
• Doppler Effect
• Earth’s magnetic field
• Eddy Currents 
• Einstein’s Photoelectric Equation: Energy Quantum of Radiation 
• Elastic Behavior of Materials
• Elastic Potential Energy
• Elasticity and Plasticity
• Electric Charge
• Electric Circuit – Definition, Components, Circuit with Bulbs
• Electric Current
• Electric Field 
• Electric Field Lines 
• Electric Flux 
• Electric Motor
• Electrical Energy, Power 
• Electromagnet
• Electromagnetic Induction
• Electromagnetic Spectrum
• Electromagnetic Waves
• Electrostatics of Conductors 
• Faraday’s Law of Induction 
• First Law of Thermodynamics
• Fluid Friction
• Force – Definition, Effects, Types, Sample Problems
• Friction: A Necessary Evil
• Gauss’s Law 
• Gravitational Potential Energy
• Hooke’s Law
• Huygens Principle 
• Hydraulic Machines
• Hydrostatic Pressure
• Kepler’s Laws of Planetary Motion
• Kinetic Energy 
• Latent Heat
• Laws of Conservation of Momentum
• Laws of Reflection
• Magnetic Field
• Magnetic Flux 
• Mass and Inertia
• Motion in Two Dimension
• Motion of an object in Three dimensional Space
• Newton’s First Law of Motion
• Newton’s Law of Cooling
• Newton’s Second Law of Motion
• Newton’s Third Law of Motion
• Newton’s Universal Law of Gravitation
• Nuclear Energy
• Nuclear Force 
• Ohm’s Law
• Pascal’s Law
• Poisson’s Ratio
• Power
• Projectile Motion
• Radioactivity 
• Refraction
• Regular and Diffused Reflection
• Relative Density
• Relative Motion
• Reynolds Number
• Rolling Motion
• Scalar Product of Vectors
• Scalars and Vectors
• Second Law of Thermodynamics
• Specific Heat Capacity
• Speed and Velocity
• Stoke’s Law
• The Experiments of Faraday and Henry 
• Thermodynamic Processes
• Total Internal Reflection
• Transformer
• Uniform Circular Motion
• Uniformly Accelerated Motion
• Viscosity
• Wave Nature of Matter 
• Weightlessness
• What is a Motion?
• What is Acceleration?
• What is Electroplating?
• What is Energy?
• What is Force?
• What is Friction?
• What is Lightning?
• What is Potential Energy?
• What is Pressure?
• Wheatstone Bridge 
• Work – Definition, Formula, Types of Work, Sample Problems
• Work Done by a Variable Force
• Work-Energy Theorem
• Young’s Modulus
• Zeroth Law of Thermodynamics

CBSE Physics Resources

CBSE Notes for Class 8 Physics

CBSE Notes for Class 9 Physics

CBSE Notes for Class 10 Physics

CBSE Notes for Class 11 Physics

CBSE Notes for Class 12 Physics

FAQs on Physics

Q1: What is the scope of physics?

Answer:

Its breadth spans from the study of incredibly small particles utilizing quantum mechanics concepts to the general relativity exploration of the whole cosmos.

Q2: What are the major theories of physics?

Answer:

The two most important theories of physics are – quantum mechanics and relativity theory.

Q3: What are SI units in physics?

Answer :

These are the standard units for the quantities of physics that are followed universally.

Q4: How is Physics related to Mathematics?

Answer:

Theoretical physics can exist without mathematics, but without mathematical assumptions, it becomes challenging to analyse and describe universal phenomena.