12th Physics Guide( PDF download)

Class 12 Physics Book

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Samacheer Kalvi 12th Physics Guide Book Back Answers

Samacheer Kalvi 12th Physics Book Back Answers

Tamilnadu State Board Samacheer Kalvi 12th Physics Book Volume 1 Solutions

  • Chapter 1 Electrostatics
  • Chapter 2 Current Electricity
  • Chapter 3 Magnetism and Magnetic Effects of Electric Current
  • Chapter 4 Electromagnetic Induction and Alternating Current
  • Chapter 5 Electromagnetic Waves

Tamilnadu State Board Samacheer Kalvi 12th Physics Book Volume 2 Solutions

  • Chapter 6 Optics
  • Chapter 7 Dual Nature of Radiation and Matter
  • Chapter 8 Atomic and Nuclear Physics
  • Chapter 9 Semiconductor Electronics
  • Chapter 10 Communication Systems
  • Chapter 11 Recent Developments in Physics

We hope the given Tamilnadu State Board Samacheer Kalvi Class 12th Physics Book Volume 1 and Volume 2 Answers Solutions Guide Pdf Free Download in English Medium and Tamil Medium will help you. If you have any queries regarding TN State Board New Syllabus Samacheer Kalvi 12th Standard Physics Guide Pdf of Text Book Back Questions and Answers, Notes, Chapter Wise Important Questions, Model Question Papers with Answers, Study Material, Question Bank, Formulas, drop a comment below and we will get back to you at the earliest.

What is Physics?

Physics is a branch of natural science that involves the study of matter and its motion through space and time, as well as energy and its interaction with matter. Physics is the study of matter, energy, space, time, motion, force, magnetism and gravity. It is the most successful science ever developed. Physics has helped humans understand things like radiation, motion, heat and light.

Concepts of Physics 12th Physics Guide

12th Physics Guide

The aim of the book is to make students familiar with concepts, principles and laws governing physics. It has been divided into three parts: 1) Constitutive Laws of Physics, 2) Kinetic Laws of Motion, and 3) Electromagnetic Induction. This book discusses the concept of physics, in particular in Class 12. It also covers topics like general relativity and black holes. This book is meant for students of class 12. The concepts of physics are explored through experiments. The text also includes diagrams, images and videos to better explain the fundamentals of physics.

Electromagnetism 12th Physics Guide

Electromagnetism is the study of how magnetism and electric charges interact with other forms of energy. It is one of the four fundamental interactions, along with gravitation, the strong force, and the weak force. The electromagnetic force is responsible for how everyday objects are able to move without friction (electromagnets) or derive power from outside sources (batteries). Electromagnets are great tools for teachers as they can show students the scientific concept of how one form of energy can be converted into another.
If you were to use a magnet, you would see that the magnetic field around the magnet is produced by electrical currents that flow through a circuit. Simply think about a toy car that has a switch on it which turns a light bulb on and off. The car’s engine vibrates, producing electricity from friction.

Newton’s Laws of Motion 12th Physics Guide

Newton’s Laws of Motion are a group of three physical laws which describe how objects interact with each other. They were discovered by Sir Isaac Newton and published in his book Philosophiæ Naturalis Principia Mathematica in 1687. Newton’s Laws of Motion is a book written by American physicist and author Eric W. Weisstein. It was originally published in October 2003 and is a source for information about Newtonian mechanics, classical mechanics, the conservation laws of momentum, energy, mass and angular momentum, gravitation, and more.


Momentum is mass multiplied by velocity. The momentum of an object equals its mass multiplied by the square of the velocity. Momentum is a vector quantity that has both magnitude and direction. If you can’t imagine how to figure out momentum, think about the amount of force you would need to push on an object with a large mass and high velocity in order for it not to move. Momentum is the tendency of an object to resist change in its velocity. Momentum allows objects with mass to maintain themselves in motion after they are released from rest. This can be easily demonstrated by pushing a cart down a steep hill. Once the cart has momentum, it will continue to roll down with time even if you stop pushing it.

Angular Momentum

Angular momentum is an important force for dynamic systems. It has two components, one rotational and the other linear. When a force applied to an object at the axis of rotation, it creates linear momentum. Angular momentum is how fast the object moves around the center of rotation. Angular Momentum is the rotational equivalent of linear momentum, and it is equal to the product of mass and velocity. The magnitude of angular momentum is found by multiplying Torque (moment) by the moment arm (distance). Angular momentum can be calculated based on torque or distance.

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Centripetal Forces, Rotational Motion

Centripetal Forces: The force that a body exerts on itself when it moves in a circular path. Force can be in either an outward or inward direction and is the centripetal component of the total force acting on an object moving in a circular path.
Rotational Motion: A motion in which an object continuously changes its orientation about a fixed point, such as spinning around its center of mass or rotating about an axis. Examples of centripetal forces are seen in everyday life. If you open a jar, the lid will tend to move toward the center of the jar because it is being attracted to the force of gravity. Centrifugal force happens when an object moves away from the center of rotation. It can be seen in an amusement park’s spinning ride or at a carnival where people are thrown into the air by a sling.

Friction, Surface Tension, and Contact Forces

Unmoving objects in contact with a surface will have a force of attraction exerted on them by the surface. This force is called a contact force. If the object moves, then there will be a force of friction that will act in the opposite direction to the contact force. When an object slides across a surface, there will be two forces acting – one from the object pushing against the surface and one from the surface pushing back. These two forces are called frictional or normal forces. Friction is an interaction between two surfaces when one surface moves across the other. Whenever one surface slides over another, there is considerable pressure exerted on the bottom of the moving object. This pressure creates an opposing force, called surface tension, which results in a net force. The magnitude of this net force depends on the geometry of the contact area and the relative speeds of the objects.

Lubrication of Surfaces 12th Physics Guide

The first time you lubricate a surface, it may feel slippery or difficult to move across. The lubricant used for this process is often oil, which dissolves into the material it is applied to, filling any small pores. When you stop applying the oil, the molecules of the oil are trapped in these pores, preventing the material from drying out. When you visit an old building, it is common knowledge that the surface of the floor may get slippery when wet. This happens due to the fact that some oil or grease has been applied to the surface. Lubrication protects surfaces from getting dirty and promotes easier movement of objects on them.


Thermodynamics is the branch of physics that studies heat, work, energy, and matter. It is also sometimes called the study of heat engines. Thermodynamic laws are important in engineering to help engineers maximize efficiency of heat engines. Thermodynamics is the branch of physics that deals with energy, its properties, transformations, and the laws governing them. It is one of the oldest sciences in physics and deals with macroscopic systems.

Heat Engines

Heat engines take advantage of the difference in temperature between a hot and cold reservoir to generate mechanical or electrical energy. In order to see much more about this topic, you can click on the following link: One of the most important features of a heat engine is its ability to produce work or do work. A heat engine can use heat to do work, which is why they are so commonly used in the power sector. Heat engines work by converting thermal energy into mechanical energy. They do this by performing work on a fluid such as water, oil, or air and transferring the resulting kinetic energy to another fluid such as a gas.

Kinetic Energy

Kinetic energy is the energy in a given object in motion and is the sum of the mass times the velocity squared. The kinetic energy of an object with mass 1 kg moving at a velocity of 2 meters per second squared is 10 joules. Kinetic energy is the capacity of an object to resist changes in its velocity as it moves. It is the force that resists acceleration and/or deceleration of a body, where mass and acceleration are vectors. Kinetic Energy is the amount of energy an object has because of its motion. For example, an average person walking at a speed of 5 km/h has 1015 J (Joules) of kinetic energy in their body.

Average Speed vs. Peak Speed

A speedometer has two different types of information: an average speed and a peak speed. Sometimes, you can’t tell which type of speed is being reported by the vehicle until you look at the data on the display. When this happens, it is helpful to know what average speed is and what peak speed is. The graph below illustrates these two different types of speeds for a car traveling along a road. When you average out all your speed, you get a measure of your average speed. This is what you’ll see when looking at the graph. At each time point, it’s an average of all the speeds in that hour. Peak speed is when you’re going the fastest. It’s only a single value per hour, which can be seen on the graph.

Particle Accelerations 12th Physics Guide

Particle accelerations are the force that particles experience when they interact with other particles. This force is called gravity for atoms and molecules, but it is an acceleration rather than a force because there is no contact between the particles. The acceleration of an object is defined as the rate at which its velocity changes with time. The acceleration of a particle can be expressed in terms of its magnitude, direction, and rate of change. When subjected to forces acting on it, this acceleration will result in a certain acceleration of the particle. In terms of magnitude, this acceleration is equal to the force divided by the mass. In terms of direction, this acceleration is perpendicular to the direction of force. In terms of rate, this acceleration is equal to the change in velocity divided by the time between two successive changes in velocity. When force is applied to a body, the mass is transferred from the body to the force. The acceleration of a body depends on how much mass it has and the Particle accelerations are an integral part of physics, and there are many different types. These include gravitational acceleration, electrical acceleration, magnetic acceleration, non-gravitational acceleration, and speed of light. Acceleration can be measured using one of three different units: g (gravity), m/s2 (meters per second squared), or m/s.

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