CBSE Class XII
PHYSICS SYLLABUS
Term II (Theory)
2021-2022
Time: 2 Hours Max Marks: 35
| S.NO | CHAPTER-WISE | No of Periods | Marks |
| Unit–V | Electromagnetic Waves |
02 |
17 |
| Chapter–8: Electromagnetic Waves | |||
| Unit–VI | Optics | 18 |
|
| Chapter–9: Ray Optics and Optical Instruments | |||
| Chapter–10: Wave Optics | |||
| Unit–VII | Dual Nature of Radiation and Matter |
07 |
11 |
| Chapter–11: Dual Nature of Radiation and Matter | |||
| Unit–VIII | Atoms and Nuclei |
11 |
|
| Chapter–12: Atoms | |||
| Chapter–13: Nuclei | |||
| Unit–IX | Electronic Devices |
07 |
7 |
| Chapter–14: Semiconductor -Electronics: Materials, Devices and Simple Circuits | |||
| Total | 45 | 35 | |
CHAPTER WISE
Unit V: ELECTROMAGNETIC WAVES 2 Periods
Chapter–8: Electromagnetic Waves
- Electromagnetic waves, their characteristics, their Transverse nature (qualitative ideas only).
- Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays) including elementary facts about their uses.
Unit VI: OPTICS 18Periods
Chapter–9: Ray Optics and Optical Instruments
Ray Optics:
- Refraction of light, total internal reflection and its applications, optical fibres, refraction at spherical surfaces, lenses, thin lens formula, lensmaker’s formula, magnification, power of a lens, a combination of thin lenses in contact, refraction of light through a prism.
- Optical instruments: Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers.
Chapter–10: WAVE OPTICS
Wave optics:
- Wavefront and Huygen’s principle, reflection and refraction of plane wave at a plane surface using wavefronts. Proof of laws of reflection and refraction using Huygen’s principle.
- Interference, Young’s double-slit experiment and expression for fringe width, coherent sources and sustained interference of light, diffraction due to a single slit, width of central maximum.
Unit VII: DUAL NATURE AND RADIATION OF MATTER 7 Periods
Chapter–11: Dual Nature of Radiation and Matter
- Dual nature of radiation, Photoelectric effect, Hertz and Lenard’s observations; Einstein’s photoelectric equation-particle nature of light.
- Experimental study of the photoelectric effect. Matter waves-wave nature of particles, de-Broglie relation
Unit VIII: ATOMS AND NUCLEI 11Periods
Chapter–12: Atoms
Alpha-particle scattering experiment; Rutherford’s model of atom; Bohr model, energy levels, hydrogen spectrum.
Chapter–13: Nuclei
Composition and size of nucleus Nuclear force Mass-energy relation, mass defect, nuclear fission, nuclear fusion.
Unit IX: ELECTRONIC DEVICES 7 Periods
Chapter–14: Semiconductor Electronics: Materials, Devices and Simple Circuits Energy bands in conductors, semiconductors and insulators (qualitative ideas only) Semiconductor diode – I-V characteristics in forward and reverse bias, diode as a rectifier; Special purpose p-n junction diodes: LED, photodiode, solar cell.
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