CBSE Syllabus for Class 12 Physics Academic Year 2020-2021
CBSE class 12 board exam is considered extremely important as it reflects one’s fundamental knowledge and scholastic skills.
Class 12 syllabus includes a wide variety of topics and fundamental concepts which students should learn about and be well acquainted with in order to solve questions in the board exams as well as other competitive exams.
CBSE Class 12 Deleted Portion of Syllabus for 2020-2021
Check subject-wise details of the deducted portion of CBSE Class 9 syllabus from the following links:
Physics Notes For Class 12 Chapter Wise
- Chapter 1 – Electric Charges And Fields
- 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
Chapter 1 – Electric Charges And Fields
The term “electricity” is derived from Elektron, a Greek word meaning amber. The properties of matter, atoms and molecules are determined by the magnetic and electric forces present in them. There are also only 2 kinds of an entity called the electric charge.
Chapter 2 – Electrostatic Potential And Capacitance
The electrostatic potential is referred to the force which is external but conservative. It is the work done by an external force in bringing a charge s from a point r to a point p. It is the difference in the potential energy of charges between initial and final points.
Potential of a point is referred to the work done per unit charge in bringing a charge from infinity to a certain point.
Chapter 3 – Current Electricity
Current is referred to the passing of charge through an area per unit time. For the maintenance of a steady flow of current, it is to be ensured that the circuit is closed and the electric charge is influenced by an external source which moves them from a lower to higher potential energy. The work done to per unit charge to move the charge is known as electromotive force or emf.
Chapter 4 – Moving Charges And Magnetism
A magnetic field is a vector field in the neighbourhood of a magnet, electric current, or changing electric field, in which magnetic forces are observable. A magnetic field is produced by moving electric charges and intrinsic magnetic moments of elementary particles associated with a fundamental quantum property known as the spin. Magnetic field and electric field are both interrelated to each other and are components of the electromagnetic force, one of the four fundamental forces of nature.
Chapter 6 – Electromagnetic Induction
Inductance is defined as the ratio between the current and the flux-linkage, which is represented by ε.
Chapter 7 – Alternating Current
In a circuit consisting of Alternating Current, the change in the current and the electromotive force can be seen with respect to time.
Chapter 8 – Electromagnetic Waves
An inconsistency in the ampere law and the presence of an additional current in order to remove this inconsistency is referred to as displacement current. The displacement current acts as a source of the magnetic field just like the conduction current.
Chapter 9 – Ray Optics and Optical Instruments
The laws of refraction and reflection are valid for all the surfaces and pairs of media at the point of incidences.
Chapter 10 – Wave Optics
Like all the different types of light, the spectrum of visible light is absorbed and emitted in the form of tiny packets of energy called photons. These photons have both the properties of a wave as well as a particle.
Hence this type of property is called wave-particle duality and the study of light in the area of physics is known as Optics.
Chapter 11 – Dual Nature Of Radiation And Matter
Photoelectric effect :
It is the phenomenon in which the electrons are emitted from the metal surface when the light is illuminated in a suitable frequency. The photoelectric effect is the conversion of light to electrical energy. It also follows the law of conservation of energy and is an instantaneous process.
Chapter 12 – Atoms
Atoms are made up of the same amount of negative and positive charges. In Thomson’s model, atoms were described as a spherical cloud of positive charges with embedded electrons. In Rutherford’s model, one tiny nucleus bears most of the mass of the atom along with its positive charges and the electrons revolve around it.
Chapter 13 – Nuclei
An atom consists of the nucleus which is positively charged. The atomic radius is larger than the nucleus’s radius. The mass of an atom is focused on the nucleus. The atom consists of neutrons which have the same mass as protons. The protons and neutrons are bound with each other with a nuclear force. The energy present in nuclear activities is much larger than that of a chemical process.
Chapter 14 – Semiconductor Electronics:Materials, Devices And Simple Circuits
Semiconductors are the core fundamental materials which are used in solid-state electronic devices such as transistors, diodes etc. The material’s atomic structure decides whether the material will turn out to be a metal, semiconductor or insulator. Semiconductors could also be elements such as Ge, Si or compounds such as CdS or GaAs.
Chapter 15 – Communication Systems
The faithful transformation of message or information is known as electronic communication which can be available in the form of electrical current or voltage traveling from one point to another.
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