CBSE Class 12

Physics

14 units · 105 topicsInternal 30Exam 70

Prep tip

Derivations and numericals carry most of the marks. Learn each derivation the syllabus asks for as a chain of steps, write units in every numerical, and practise the ray diagrams, circuit diagrams and graphs (V-I, photoelectric, binding energy per nucleon) until you can draw them from memory.

Suggested order: Unit I, then II, then III, then IV, then V, then VI, then VII, then VIII, then IX, then X, then XI, then XII, then XIII, and XIV last.

Units

Unit I0 of 9 read

Electric charges and fields

9 sheets · about 84 min reading

Electric charge and its basic properties8 min Coulomb's law: force between two point charges9 min Forces between multiple charges and continuous charge distribution9 min Electric field and the field due to a point charge9 min Electric field lines7 min Electric dipole and the field due to a dipole12 min Torque on a dipole in a uniform electric field8 min Electric flux and Gauss's theorem10 min Gauss's theorem: field of a long wire, a plane sheet and a spherical shell12 min

Unit II0 of 9 read

Electrostatic potential and capacitance

9 sheets · about 83 min reading

Electric potential, potential difference and potential due to a point charge10 min Potential due to a dipole and due to a system of charges10 min Equipotential surfaces and the link between E and V8 min Potential energy of a system of charges and of a dipole in a field10 min Conductors in electrostatics: free charges and bound charges9 min Dielectrics and electric polarisation8 min Capacitors, capacitance and their combinations10 min Parallel plate capacitor, with and without a dielectric10 min Energy stored in a capacitor8 min

Unit III0 of 9 read

Current electricity

9 sheets · about 94 min reading

Electric current, drift velocity and mobility12 min Ohm's law, resistivity and conductivity12 min V-I characteristics: linear and non-linear8 min Temperature dependence of resistance9 min Electrical energy and power9 min EMF, terminal voltage and internal resistance10 min Combination of cells in series and in parallel10 min Kirchhoff's rules12 min Wheatstone bridge and the metre bridge practicals12 min

Unit IV0 of 8 read

Moving charges and magnetism

8 sheets · about 84 min reading

Magnetic field and Oersted's experiment8 min Biot-Savart law and the field on the axis of a circular loop12 min Ampere's circuital law: long straight wire and solenoid10 min Force on a moving charge: the Lorentz force and motion in a magnetic field12 min Force on a current-carrying conductor, force between parallel currents and the ampere10 min Torque on a current loop; the loop as a magnetic dipole10 min Moving coil galvanometer and its current sensitivity12 min Converting a galvanometer into an ammeter and a voltmeter10 min

Unit V0 of 8 read

Magnetism and matter

8 sheets · about 68 min reading

The bar magnet: poles and magnetic moment7 min Magnetic field lines and their properties7 min The bar magnet as an equivalent solenoid (qualitative)8 min Field of a bar magnet on its axis and on its equator (qualitative)8 min Torque on a bar magnet in a uniform magnetic field (qualitative)8 min Magnetisation, magnetic intensity and susceptibility10 min Diamagnetic, paramagnetic and ferromagnetic substances12 min Effect of temperature on magnetic properties8 min

Unit VI0 of 7 read

Electromagnetic induction

7 sheets · about 74 min reading

Electromagnetic induction: the experiments of Faraday and Henry8 min Magnetic flux and Faraday's laws of induction10 min Induced emf and induced current10 min Lenz's law and conservation of energy10 min Motional emf in a rod moving in a magnetic field12 min Self induction and self inductance12 min Mutual induction and mutual inductance12 min

Unit VII0 of 7 read

Alternating current

7 sheets · about 78 min reading

Alternating current: peak and rms values10 min AC through a resistor, an inductor and a capacitor12 min Series LCR circuit: phasor diagram and impedance12 min Resonance in a series LCR circuit10 min Power in AC circuits, power factor and wattless current12 min AC generator10 min Transformer12 min

Unit VIII0 of 4 read

Electromagnetic waves

4 sheets · about 38 min reading

Displacement current10 min Electromagnetic waves: sources, nature and characteristics10 min EM spectrum: radio waves, microwaves, infrared and visible light10 min EM spectrum: ultraviolet, X-rays and gamma rays8 min

Unit IX0 of 9 read

Ray optics and optical instruments

9 sheets · about 98 min reading

Reflection and spherical mirrors: the mirror formula12 min Refraction of light: Snell's law and apparent depth10 min Total internal reflection and optical fibres10 min Refraction at a spherical surface10 min Lenses: the lens maker's formula and the thin lens formula12 min Magnification, power of a lens and lenses in contact10 min Refraction through a prism10 min Microscopes: simple and compound12 min Astronomical telescopes: refracting and reflecting12 min

Unit X0 of 8 read

Wave optics

8 sheets · about 76 min reading

Wavefront and Huygens' principle9 min Reflection of a plane wave: proving the law of reflection9 min Refraction of a plane wave: proving Snell's law11 min Superposition and interference of light10 min Coherent sources and sustained interference8 min Young's double slit experiment and fringe width12 min Diffraction of light at a single slit10 min Width of the central maximum (qualitative)7 min

Unit XI0 of 7 read

Dual nature of radiation and matter

7 sheets · about 68 min reading

Dual nature of radiation; electron emission and work function8 min Photoelectric effect: observations of Hertz, Hallwachs and Lenard8 min Experimental study of the photoelectric effect12 min Einstein's photoelectric equation12 min Particle nature of light: the photon9 min Matter waves: wave nature of particles8 min de Broglie relation: wavelength of accelerated particles11 min

Unit XII0 of 6 read

Atoms

6 sheets · about 56 min reading

Alpha-particle scattering experiment10 min Rutherford's nuclear model of the atom8 min Bohr's model of the hydrogen atom: the three postulates9 min Radius of the nth Bohr orbit9 min Velocity and energy of the electron in the nth orbit11 min Line spectra of the hydrogen atom9 min

Unit XIII0 of 7 read

Nuclei

7 sheets · about 59 min reading

Composition of the nucleus: protons, neutrons and isotopes8 min Size and density of the nucleus8 min Nuclear force7 min Mass-energy relation, mass defect and binding energy9 min Binding energy per nucleon and its variation with mass number10 min Nuclear fission9 min Nuclear fusion8 min

Unit XIV0 of 7 read

Semiconductor electronics: materials, devices and simple circuits

7 sheets · about 64 min reading

Energy bands: conductors, semiconductors and insulators9 min Intrinsic semiconductors: electrons and holes8 min Extrinsic semiconductors: n-type and p-type9 min Formation of a p-n junction9 min Junction diode in forward bias8 min Junction diode in reverse bias, and the I-V experiment10 min Diode as a rectifier: half-wave and full-wave11 min

How the 100 marks split

Internal · Two experiments14

Internal · Practical record5

Internal · One activity3

Internal · Investigatory project3

Internal · Viva5

End-semester exam70

Total100

The usual internal split. Your college may differ.Practise a model paper