CBSE NCERT Solutions For Class 12 Physics PDF – Students who are in search of CBSE NCERT Solutions for Class 12 Physics can find from this page. All the Class 12 Physics NCERT Solutions provided in this page are solved by academic experts of Embibe. Each question comes with detailed step by step solution along with a diagrammatic explanation to help students to understand the concepts easily without any difficulty. Working on CBSE NCERT Solutions for Class 12 Physics will not only help students to secure good marks in board exams but also helps students in their undergraduate competitive entrance like NEET, AIIMS, JEE Main, BITSAT etc.,
Students can also download the CBSE NCERT Solutions For Class 12 Physics in PDF format and access them even in offline mode. Also while revising the whole syllabus, students must go through the Class 12 Physics NCERT Solutions for every question so that all your doubts are resolved and you get a better understanding about how to approach the problems. In this article, we will provide you with all the necessary information regarding CBSE NCERT Solutions For Class 12 Physics PDF. Read on to find more about Class 12 Physics NCERT Solutions.
CBSE NCERT Solutions For Class 12 Physics PDF Download
NCERT Solutions for Class 12 Physics has been written to help students who are appearing for different board exams as well as the engineering & medical competitive entrance exams. It provides sound knowledge and understanding of all important concepts covered in each chapter in the NCERT textbooks. Just click on the chapter wise download links given below to download NCERT Solutions for Class 12 Physics.
Class 12 Physics NCERT Chapter Wise Solutions
- Chapter 1 – Electric Charges and Field
- Chapter 2 – Electrostatic Potential and Capacitance
- Chapter 3 – Current Electricity
- Chapter 4 – Moving Charges and Magnetism
- Chapter 5 – Magnetism and Matter
- Chapter 6 – Electromagnetic Induction
- Chapter 7 – Alternating Current
- Chapter 8 – Electromagnetic Waves
- Chapter 9 – Ray Optics and Optical Instruments
- Chapter 10 – Wave Optics
- Chapter 11 – Dual nature of radiation and matter
- Chapter 12 – Atoms
- Chapter 13 – Nuclei
- Chapter 14 – Semiconductor Electronics: Materials, Devices, and Simple Circuits
- Chapter 15 – Communication Systems
CBSE NCERT Solutions For Class 12 Physics – Chapter Descriptions
NCERT Solution for Class 12 Science Physics Chapter 1 – Electric Charges and Field
All of us have the experience of seeing a spark or hearing a crackle when we take off our synthetic clothes or sweater, particularly in dry weather. Have you ever tried to find any explanation for this phenomenon? This is because of the electric discharge. Another common example of electric discharge is the lightning that we see in the sky during thunderstorms. We also experience a sensation of an electric shock either while opening the door of a car or holding the iron bar of a bus after sliding from our seat. The reason for these experiences is the discharge of electric charges through our body, which was accumulated due to rubbing of insulating surfaces. You might have also heard that this is due to the generation of static electricity. This the topic exactly we are going to discuss in this chapter. Static means anything that does not move or change with time. Electrostatics deals with the study of forces, fields, and potentials arising from static charges.
NCERT Solution for Class 12 Science Physics Chapter 2- Electrostatic Potential and Capacitance
The notion of potential energy is not a new concept to you. When an external force acts on a body against spring or the gravitational force, the work done during that moment is stored as the potential energy of the body. And in the absence of such external force, the body moves gaining kinetic energy and losing the potential energy at the same time. This causes a balance between the two energies. In this chapter, you will learn more about conservative forces such as spring and gravitational force. The potential at a point is basically the work done per unit charge in bringing a charge from infinity to that point. From this chapter, you can look out for concepts such as electrostatic force between charges, capacitor, electric field, torque, etc.
Chapter 3- Current Electricity: Charges that are in motion develop an electric current in many situations such as lightning. Lightning is the flow of charges from clouds to the earth through the atmosphere. Even in our daily lives, we see the charges flowing through many devices steadily, for example, torches, cell-driven clock. But currents are not always steady or do not obey the law of vector addition. Homogenous conductors like silver or semiconductors obey the famous law i.e., Ohm’s law within some range of electric field. This chapter will have a lot of problem-solving questions, students must pay attention while learning the derivations from each law to solve them. While solving if the students come across a doubt, they can go through the NCERT Solutions for Class 12 Physics solved by the Embibe experts from the link given above.
Chapter 4 Moving Charges and Magnetism: It was only before 200 years, the relation between electricity and magnetism has been discovered by Hans Christian Oersted. Fundamentally, electrostatic field lines originate at a positive charge and terminate at a negative charge or fade at infinity. Magnetic field lines always form closed loops. This chapter will help you understand the laws obeying electricity and magnetism. Also, you will see how the forces are exerted by the magnetic field on moving charged particles like electrons, protons, and current-carrying wires. This is one of the important chapters not only for the Class 12 exams but also for the higher studies. This chapter will provide a good foundation for students who wish to pursue higher studies in the electrical field.
Chapter 5 Magnetism and Matter: Earth’s magnetism is a universal phenomenon that was observed by mankind since the beginning. As a matter of fact, we also know that the earth itself is a huge magnet with magnetic fields pointing at the geographic locations of south and north. Beginning from the bar magnet, you will come across the magnetic field lines, magnetic moment, magnetic field strength, susceptibility and more. Candidates who are studying this chapter must take down notes in every section. This will, in turn, help to solve the questions behind the chapter. Students can also find the NCERT Solutions for Class 12 Physics Chapter 5 in case of any doubts.
Chapter 6 Electromagnetic Induction: Following the trend, even this chapter deals with the two most important concepts such as electricity and magnetism in relation to each other. Pioneering experiments were held during the 19th century regarding the electromagnetism. Experiments of Faraday and Henry, magnetic flux and motional electromotive force are clearly explained in this chapter. Going through this chapter and then attempting the related questions will help in memorizing the concepts better.
Chapter 7 Alternating Current: The phrases ac voltage and ac current are contradictory and redundant as they literally mean alternating current voltage and alternating current. Today, most of the electrical devices we use require ac voltage. This is mainly because most of the electrical energy sold by power companies is transmitted and distributed as alternating current. Today, most of the electrical devices we use require ac voltage.
Chapter 8 Electromagnetic trends: The basic differences between various types of electromagnetic waves is explained in this chapter. For electromagnetic waves, the differences can be identified in their wavelengths or frequencies since all of them travel through a vacuum with the same speed. Consequently, the waves differ considerably in their mode of interaction with matter. The oscillating fields of an electromagnetic wave can accelerate charges and can produce oscillating currents. Therefore, an apparatus designed to detect electromagnetic waves is based on this fact. Hertz original ‘receiver’ worked in exactly this way. The same basic principle is utilized in practically all modern receiving devices. You will learn such interesting concepts from this chapter on Electromagnetic trends.
Chapter 9 Ray Optics and Optical Instruments: Electromagnetic radiation belonging to this region of the spectrum between the wavelength 400 nm to 750 nm is called light. There are two things that we can intuitively mention light from common experience. First, it travels with enormous speed and second, that it travels in a straight line. The path in which light travels is called a ray of light and a bundle of such rays constitutes a beam of light. Also, the light energy is concentrated in tiny particles called corpuscles. The laws of reflection and refraction are true for all surfaces and pairs of media at the point of the incidence. In this chapter, you will understand the concepts of refraction and reflection in detail.
Chapter 10 Wave Optics: Followed by chapter 9 on ray optics, this chapter will deal with one of the most important principles in the area of ray optics. The corpuscular model predicted that if the ray of light bends towards the normal then the speed of light would be greater in the second medium. Waves from a point source spread out in all directions, while the light was seen to travel along with narrow rays. It required the insight and experiment of Huygens, Young and Fresnel to understand how a wave theory could explain all aspects of the behavior of light In this chapter, you will come to know the Huygens principle clearly and derive the laws of reflection and refraction along with the phenomenon of interference which is based on the principle of superposition.
Chapter 11 Dual Nature of Radiation and Matter: Through this chapter, you will understand the photoelectric effect in detail. Th The minimum energy needed by an electron to come out from a metal surface is called the work function of the metal. Energy (greater than the work function (φο ) required for electron emission from the metal surface can be supplied by suitably heating or applying strong electric field or irradiating it by the light of suitable frequency. The photoelectric effect is the phenomenon of emission of electrons by metals when illuminated by the light of suitable frequency. Certain metals respond to ultraviolet light while others are sensitive even to the visible light. The photoelectric effect involves the conversion of light energy into electrical energy. It follows the law of conservation of energy. The photoelectric emission is an instantaneous process and possesses certain special features.
Chapter 12 Atoms: The first atom model was proposed by J.J Thomson in 1898. As per this model, the positive charge of the atom is distributed throughout the volume of the atom uniformly and the negatively charged electrons are embedded in it like seeds in a watermelon. This model was picturesquely called plum pudding model of the atom. Another such model is Rutherford’s model. Both the Thomson’s as well as Rutherford’s models constitute an unstable system. Thomson’s model is unstable electrostatically, while Rutherford’s model is unstable because of electromagnetic radiation of orbiting electrons. Another such model is Bohr’s model where the orbital picture of the hydrogen atom was inconsistent with the uncertainty principle. It was replaced by modern quantum mechanics in which Bohr’s orbits are regions where the electron may be found with a large probability. To know more on this chapter go through NCERT Solutions for Class 12 Physics Chapter 12.
Chapter 13 Nuclei: Does the nucleus have a structure, just as the atom does? If so, what are the constituents of the nucleus? Chadwick was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron. Whereas Rutherford was the engineer who postulated the existence of the atomic nucleus. In this chapter, you will get in-depth knowledge of the Nucleus. You will learn that the density of nuclear matter is independent of the size of the nucleus whereas the mass density of the atom does not follow this rule. The mass of a neutron is now known to a high degree of accuracy and is expected to be equal to the total mass of its individual protons and neutrons.
Chapter 14 Semiconductor Electronics: Materials, Devices, and Simple Circuits: Devices in which a controlled flow of electrons can be collected are called the basic building blocks of all the electronic circuits. Before the discovery of transistor in 1948, such devices also called vacuum tubes, had two electrodes namely anode and cathode. In a vacuum tube, the electrons are supplied by a heated cathode and the controlled flow of these electrons in a vacuum is obtained by varying the voltage between its different electrodes. The vacuum is required in the inter-electrode space otherwise, the moving electrons may lose their energy on collision with the air molecules in their path. In these devices, the electrons can flow only from the cathode to the anode. The seed of the development of modern solid-state semiconductor electronics goes back to 1930s when it was realized that some solid-state semiconductors and their junctions offer the possibility of controlling the number and the direction of flow of charge carriers through them. This chapter will introduce you to the basic concepts of semiconductor physics such as junction diode de
Chapter 15 – Communication Systems
In a communication system, the transmitter is located at one place, the receiver is located at some other place (far or near) separate from the transmitter and the channel is the physical medium that connects them. Depending upon the type of communication system, a channel may be in the form of wires or cables connecting the transmitter and the receiver or it may be wireless. The purpose of the transmitter is to convert the message signal produced by the source of information into a form suitable for transmission through the channel. If the output of the information source is a non-electrical signal like a voice signal, a transducer converts it to electrical form before giving it as an input to the transmitter. When a transmitted signal propagates along the channel it may get distorted due to channel imperfection. Moreover, noise adds to the transmitted signal and the receiver receives a corrupted version of the transmitted signal. The receiver has the task of operating on the received signal. It reconstructs a recognizable form of the original message signal for delivering it to the user of information. In this chapter, students will learn in detail about the Communication System.
At Embibe, Class 12 students of Science stream can solve Class 12 PCMB Practice Questions for free and view their solutions. These will help them not only in their board exams but also in competitive entrance exams, like JEE (Main and Advanced) and NEET. For these exams, Embibe provides free PCMB Class 12 Mock Tests as well. These resources will be extremely useful in your CBSE Class 12 preparation as well as various engineering and medical entrance exams. Make the best use of these resources and secure a very high score in your Class 12 board exams and other exams.
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