Physics Class 12 CBSE
Getting difficulty in understanding concept of Physics? Now feel relaxed, as LearnFatafat provides Magical way to understand all concepts of CBSE Class 12 Physics Course. Course contains 226 video lessons. It covers all the concepts of 15 chapters of CBSE Class 12 NCERT based syllabus. It provides simple way of learning with simplified concepts and interesting videos. Concepts are briefly explained including derivations, different laws, experiments and many more. For easy understanding, video lessons are divided according to chapters; in which part 1 contains 8 chapters and part 2 contains 7 chapters;
Part 1: Electric Charges and Fields, Electrostatic Potential and Capacitance, Current Electricity, Moving Charges and Magnetism, Magnetism and Matter, Electromagnetic Induction, Alternating Current, Electromagnetic Waves.
Part 2: Ray Optics and Optical Instruments, Wave Optics, Dual Nature of Radiation and Matter, Atoms, Nuclei, Semiconductor Electronics : Materials Devices and Simple Circuits, Communication Systems.
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Lessons
01 Electric Charges and Fields
- 01.01 Electric Charge
- 01.02 Conductors, Semiconductors and Insulators
- 01.03 Basic Properties of Electric Charge
- 01.04 Electrostatic Induction
- 01.05 Coulomb’s Law
- 01.06 Force Between Multiple Charges
- 01.07 Electric Field
- 01.08 Electric field due to a system of charges
- 01.09 Electric Field Lines and Physical Significance of Electric Field
- 01.10 Electric Flux
- 01.11 Electric Dipole, Electric Field of Dipole
- 01.12 Dipole in Uniform External Field
- 01.13 Continuous charge distribution: Surface, linear and volume charge densities and their electric fields
- 01.14 Gauss Law
- 01.15 Field due to an infinitely long straight uniformly charged wire
- 01.16 Field Due to Uniformly Charged infinite Plane Sheet
- 01.17 Electric Field Due to Uniformly Charged Thin Spherical Shell
03 Current Electricity
- 3.01 Electric Current
- 3.02 Ohm’s Law
- 3.03 Drift of Electrons and Mobility
- 3.04 Limitation of Ohm’s law, Resistivity
- 3.05 Temperature dependence of Resistivity
- 3.06 Ohmic Losses, Electrical Energy and Power
- 3.07 Combination of Resistors
- 3.08 Cell, EMF and Internal Resistance
- 3.09 Cells in series and in parallel
- 3.10 Kirchhoff’s Law
- 3.11 Wheatstone Bridge
- 3.12 Meter Bridge
- 3.13 Potentiometer
04 Moving Charges and Magnetism
- 4.01 Concept of Magnetic Field
- 4.02 Magnetic Force on Current Carrying Conductor
- 4.03 Motion of a Charge in Magnetic Field
- 4.04 Velocity Selector
- 4.05 Cyclotron
- 4.06 Biot Savart's Law
- 4.07 Magnetic Field on the Axis of Circular Current Carrying Loop
- 4.08 Ampere’s Circuital Law
- 4.09 Proof and Applications of Ampere’s Circuital Law
- 4.10 The Solenoid
- 4.11 Toroid
- 4.12 Force Between Two Parallel Current Carrying Conductor
- 4.13 Torque on a rectangular current loop with its plane aligned with Magnetic Field
- 4.14 Torque on a rectangular current loop with its plane at some angle with Magnetic Field
- 4.15 Circular Current Loop as Magnetic Dipole
- 4.16 The Magnetic Dipole Moment of a Revolving Electron
- 4.17 The Moving Coil Galvanometer
- 4.18 Conversion of Galvanometer to Ammeter and Voltmeter
05 Magnetism and Matter
- 5.01 Magnetic Phenomenon and Bar Magnets
- 5.02 Bar Magnet and Magnetic Field Lines
- 5.03 Bar magnet as an equivalent solenoid
- 5.04 Magnetic dipole in a uniform magnetic field
- 5.05 Gauss’s Law in Magnetism
- 5.06 The Earth’s Magnetism
- 5.07 Magnetic Declination and Inclination
- 5.08 Magnetization and Magnetic Intensity
- 5.09 Magnetic Susceptibility and Magnetic Permeability
- 5.10 Magnetic Properties of Materials - Diamagnetism
- 5.11 Magnetic Properties of Materials - Paramagnetism
- 5.12 Ferromagnetism
- 5.13 Hysteresis
- 5.14 Permanent Magnets and Electromagnets
06 Electromagnetic Induction
- 6.01 Experiments of Faraday and Henry
- 6.02 Magnetic Flux And Faraday's Law of Electromagnetic induction
- 6.03 Lenz Law and Conservation of Energy
- 6.04 Motional Electromotive Force
- 6.05 Motional EMF and Energy Consideration
- 6.06 Eddy Currents
- 6.07 Applications of Eddy Currents
- 6.08 Mutual Inductance
- 6.09 Self-Inductance
- 6.10 Energy Stored in an Inductor
- 6.11 AC Generator
07 Alternating Current
- 7.01 AC Current - Introduction
- 7.02 AC Voltage Applied to a Resistor
- 7.03 Power in Resistive Circuit
- 7.04 Representation of AC current and Voltages: Phasor Diagram
- 7.05 AC Voltage applied to an Inductor
- 7.06 Power in Inductive Circuit
- 7.07 AC Voltage applied to a Capacitor
- 7.08 Power in Capacitive Circuit
- 7.09 AC Voltage applied to Series LCR Circuit: Phasor Diagram Solution
- 7.10 AC Voltage applied to Series LCR Circuit: Analytical Solution
- 7.11 Resonance in AC Circuit
- 7.12 Sharpness of Resonance and Q Factor
- 7.13 Power in AC Circuit: The Power Factor
- 7.14 LC Oscillator - Derivation of Current
- 7.15 LC Oscillator - Explanation of Phenomena
- 7.16 Analogous Study of Mechanical Oscillations with LC Oscillations
- 7.17 Construction and Working Principle of Transformers
- 7.18 Step Up, Step Down Transformers, and Limitations of Practical Transformer
08 Electromagnetic Waves
- 8.01 Introduction to Electromagnetic Waves
- 8.02 Displacement Current
- 8.03 Continuity of Current
- 8.04 Maxwell's Equations and Lorentz Force
- 8.05 Sources of Electromagnetic Waves
- 8.06 Nature of Electromagnetic Waves
- 8.07 Electromagnetic Spectrum: Radio Waves, Microwaves
- 8.08 Electromagnetic Spectrum: Infrared Waves and Visible Light
- 8.09 Electromagnetic Spectrum: Ultraviolet Rays, X-rays and ƴ-rays
02 Electrostatic Potential and Capacitance
- 2.01 Electrostatic Potential Energy
- 2.02 Electrostatic Potential
- 2.03 Potential due to Point Charge
- 2.04 Potential due to an Electric Dipole
- 2.05 Potential due to System of Charges
- 2.06 Equipotential Surfaces
- 2.07 Relation between Electric field and Electric potential
- 2.08 Expression for Electric Potential Energy of System of Charges
- 2.09 Potential Energy in External Field
- 2.10 Potential energy of a dipole in an external field
- 2.11 Electrostatics of Conductors
- 2.12 Dielectrics and Polarization
- 2.13 Capacitors and Capacitance
- 2.14 The Parallel Plate Capacitor
- 2.15 Effect of Dielectric on Capacitance
- 2.16 Series and Parallel Combination of Capacitors
- 2.17 Energy Stored in Capacitor
- 2.18 Van de Graaff Generator
09 Ray Optics and Optical Instruments
- 9.01 Reflection of Light by Spherical Mirrors: Introduction, Laws and Sign Convention
- 9.02 Focal Length of Spherical Mirrors
- 9.03 The Mirror Equation
- 9.04 Refraction of Light
- 9.05 Total Internal Reflection
- 9.06 Applications of Total Internal Reflection: Mirage, sparkling of diamond and prism
- 9.07 Applications of Total Internal Reflection: Optical fibres
- 9.08 Refraction at Spherical Surface
- 9.09 Refraction by Lens: Lens-maker’s formula
- 9.10 Lens formula, Image Formation in Lens
- 9.11 Linear Magnification and Power of Lens
- 9.12 Combination of thin lenses in contact
- 9.13 Refraction through a Prism
- 9.14 Angle of Minimum Deviation and its Relation with Refractive Index
- 9.15 Dispersion by Prism
- 9.16 Some Natural Phenomena due to Sunlight : The Rainbow
- 9.17 Some Natural Phenomena due to Sunlight : Scattering of Light
- 9.18 Functioning of Lens in Human Being
- 9.19 Vision Problems and their remedies
- 9.20 Simple Microscope
10 Wave Optics
- 10.01 Wave Optics: Introduction and Historical Background
- 10.02 The Concept of Wavefront
- 10.03 Huygens Principle
- 10.04 Refraction of Plane Wave using Huygens Principle
- 10.05 Reflection of Plane Wave using Huygens Principle
- 10.06 The Doppler Effect
- 10.07 Red shift, Blue shift and Doppler Shift
- 10.08 Coherent and Incoherent Source
- 10.09 Coherent and Incoherent Addition of Waves: Constructive Interference
- 10.10 Coherent and Incoherent Addition of Waves: Destructive Interference
- 10.11 Conditions for Constructive and Destructive interference
- 10.12 Interference of Light waves and Young's Experiment
- 10.13 Young's Experiment, Positions of Maximum and Minimum Intensities and Fringe Width
- 10.14 Outcomings of Young's Experiment
- 10.15 Diffraction of Light
- 10.16 Diffraction of light due to Single Slit
- 10.17 Resolving Power of Optical Instruments
- 10.18 Concept of Polarisation
- 10.19 Polarisation by scattering and Reflection
11 Dual Nature of Radiation and Matter
- 11.01 Dual Nature of Radiation and Matter: Historical Journey
- 11.02 Electron Emission
- 11.03 Photoelectric Effect: Concept and Experimental Discoveries
- 11.04 Experimental Study of Photoelectric Effect
- 11.05 Effect of Potential Difference on Photoelectric Current
- 11.06 Effect of Frequency of Incident Radiation on Stopping Potential
- 11.07 Photoelectric Effect and Wave Theory of Light
- 11.08 Einstein's Photoelectric Equation: Energy Quantum of Radiation
- 11.09 Particle Nature of Light: The Photon
- 11.10 Wave Nature of Matter - I
- 11.11 Wave Nature of Matter - II
- 11.12 Davisson and Germer Experiment
12 Atoms
- 12.01 Thomson's Model of Atom
- 12.02 Alpha-Particle Scattering and Rutherford's Nuclear Model of Atom
- 12.03 ⍺-Particle Trajectory and Electron Orbits
- 12.04 Atomic Spectra
- 12.05 Drawbacks of Rutherford's Nuclear Model of Atom
- 12.06 Postulates of Bohr's Model of Hydrogen Atom
- 12.07 Bohr's Radius and Total Energy of an electron in Bohr's Model of Hydrogen Atom
- 12.08 Energy Levels
- 12.09 Rydberg Constant and the line Spectra of Hydrogen Atom
- 12.10 De Broglie's Explanation of Bohr's Second Postulate of Quantisation and Limitations of Bohr's Atomic Model
13 Nuclei
- 13.01 Atomic Masses and Composition of Nucleus
- 13.02 Discovery of Neutrons
- 13.03 Size of Nucleus
- 13.04 Mass-Energy Equivalence and Concept of Binding Energy
- 13.05 Binding Energy per Nucleon
- 13.06 Nuclear Forces
- 13.07 Concept of Radioactivity and Law of Radioactive Decay
- 13.08 Half-life and Mean-life
- 13.09 Radioactive Decay : ⍺-decay, β-decay and -decay
- 13.10 Nuclear Fission
- 13.11 Chain Reaction
- Nuclear Reactor
- 13.13 Nuclear Fusion
- 13.14 Stellar Energy
14 Semiconductor Electronics: Materials, Devices and Simple Circuits
- 14.01 Semiconductors Electronics: Introduction
- 14.02 Band Theory of Solids
- 14.03 Intrinsic Semiconductor
- 14.04 Extrinsic Semiconductor
- 14.05 Energy Band structure of Extrinsic Semiconductors
- 14.06 p-n Junction
- 14.07 Semiconductor Diode in Forward Bias
- 14.08 Semiconductor Diode in Reverse Bias
- 14.09 Application of Junction Diode - Half Wave Rectifier
- 14.10 Application of Junction Diode - Full Wave Rectifier
- 14.11 Zener Diode
- 14.12 Optoelectronic Junction Devices: Photodiode and Solar Cell
- 14.13 Light Emitting Diode (LED)
- 14.14 Concept and Structure of Bipolar Junction Transistor
- 14.15 Operation of Transistor
- 14.16 Common Emitter Transistor Characteristics
- 14.17 Transistor As a Switch
- 14.18 Transistor as an Amplifier: Principle
- 14.19 Transistor as an Amplifier - Common Emitter Configuration
- 14.20 Transistor as an Oscillator
15 Communication System
- 15.01 Communication System
- 15.02 Basic Terminology Used In Electronic Communication system
- 15.03 Bandwidth of Signal and Bandwidth of Transmission Medium
- 15.04 Propagation of Electromagnetic Waves
- 15.05 Need of Modulation
- 15.06 Types of Modulation and Concept of Amplitude Modulation
- 15.07 Production and Detection of Amplitude Modulated Wave