**R20 1-1 Physics Full Notes and Materials PDF Download**

Students studying JNTUK R20 CSE/IT branches, You can download the Unit-wise R20 1-A Applied Physics Notes/Material. Below is a PDF.

**UNIT-1**

**Wave Optics**

**Interference** Superposition principle Interference of light with thin film (Reflection Geometry) & applications colors in thin films Newton’s Rings: Determination of length and refractive index.

**Diffraction**: Introduction – Fresnel and Fraunhofer Diffraction due to a single slit, double slit – N-slits(Qualitative) – Grating – Dispersive power and resolving power of Grating(Qualitative).

**Polarization** The basics of Polarization Polarization by reflection, double refraction, and refraction of Half wave plates of Nicol’s Prism as well as Quarter Wave plates

**Unit Objectives:** The students will be in a position to

- Define the need for coherent sources as well as the conditions for continuous interference (L2)
- Find engineering applications for interference (L3)
- Compare the effects of Diffraction and interference using applications (L4)
- Define how polarization is a concept of light and its applications of it (L2)
- The classification of ordinary polarized light is different from extraordinary light that is polarized (L2)

**Download the UNIT-1 Material PDF **| **Reference 2** | **Ref-3**

**Unit-2**

**Fiber optics and lasers**

**Lasers** The Introduction. Featured characteristics of lasers – Spectacular and stimulated emission of radiation – Einstein’s equations Inversion of the population -Lasing action Pumping mechanisms Ruby laser He-Ne laser – Application of lasers.

**Fiber optics:** Introduction -Principle of optical fiber- Acceptance Angle-Numerical ApertureClassification of optical fibers based on refractive index profile and modes -Propagation of electromagnetic wave through optical fibers – Applications.

**Unit Objectives:** The students will be capable of

- Know the basic principles of LASER Light Sources (L2)
- Utilize the knowledge to discover the different types of lasers (L3)
- Finds out the Engineering application of lasers (L2)
- Define the principle behind optical fibers (L2)Classify optical fibers based on refractive index profile as well as modes of propagation (L2)
- Determine the potential applications of optical fibers across various areas (L2)

**Download Document PDF for UNIT-2** | **Reference-2**

**UNIT-3:**

**Quantum Mechanics, Free Electron Theory, and Band Theory**

**Quantum Mechanics:** Dual nature of matter Heisenberg’s uncertainty Principle – The significance and properties of the waves – Schrodinger’s Independent and Dependent Wave Equations Particle in a single-dimensional infinite-potential well.

**Free Electron Theory:** Classical free electron theory (Qualitative with a discussion of its merits and drawbacks) — Quantum free electron theory equation for the Conductivity of electrical energy based on a quantum theory of free electrons Fermi-Dirac distribution – Density of states (3D) 3D Fermi energy.

**The Band Theory for Solids** Bloch’s theorem (Qualitative) Theorem of Bloch’s Theorem (Qualitative) Kronig theorem Penney theory (Qualitative) E Vs. K diagram V and K diagram Effective mass of electrons – Classification of solids with crystals. Concept of the hole.

**Unit Objectives:** The students will be in a position to

- Discuss the concept of double nature in the matter (L2)
- Learn about the importance of the Wave function (L2)
- Learn to interpret the theories of quantum and classical theory of free electrons (L2)
- Discuss the importance of the K-P model.
- Sort the materials according to the theory of bands (L2)
- Utilize the concept of the effect of the mass of an electron (L3)

**Download the UNIT-3 Material PDF** | **Reference 2** | **Ref-3**

**Unit-4:**

**Magnetic and Dielectric Materials Magnetic Materials**

**Dielectric Materials** The Introduction: Dielectric the polarization of dielectrics – Dielectric polarizability susceptibility and dielectric constant – Different types of polarizations: Electronic (Quantitative) Ionic (Quantitative) and Polarizations of Orientation (Qualitative) (Qualitative) Lorentz internal field Claudius – Mossotti equation Piezoelectricity.

**Magnetic Materials:** Introduction – Magnetic dipole moment -MagnetizationMagnetic susceptibility and permeability – Origin of the permanent magnetic moment – Classification of magnetic materials: Dia, para, Ferro, antiterror & Ferri magnetic materials – Domain concept for Ferromagnetism & Domain walls (Qualitative) – Hysteresis – soft and hard magnetic materials- Eddy currents- Engineering applications.

**Unit Results:** The students will be capable of

- Discuss the concept of dielectric constant and dielectric polarization dielectric substances (L2)
- List the various types of dielectric polarization (L2)
- Interpret Lorentz field and Clausius- Mosotti relation in dielectrics(L2)
- Classify magnetic materials according to susceptibility and relationship to temperature (L2)
- Define the functions of magnetic and dielectric materials (L2)
- Use the notion of magnetism to magnetic information storage devices (L3)

**Download UNIT-4 Material PDF** | **Reference 2** |** Ref-3**

**Unit-5:**

**Semiconductors, as well as Superconductors**

**Semiconductors** Introduction-Intrinsic semiconductors Density of charge carriers Conductivity of electrical energy Fermi level – extrinsic semiconductors Density of charge carriers and the dependence of Fermi energy on temperature and concentration of the carrier – Drift and diffusion currents Einstein’s equation Hall effect Hall coefficient – Application for the Hall effect.

**Superconductors**Introduction Data on the properties of superconductors Meissner effect Type I superconductors and Type II BCS Theory (Qualitative) The theory of Josephson impacts (AC and DC) SQUIDs Tc superconductors. Applications of Superconductors.

**Unit Results:** The students will be in a position to

- The energy bands are the categories for semiconductors (L2)
- Learn to interpret the indirect and direct band gap in semiconductors (L2)
- Determine the semiconductor type with the help of the Hall effect (L2)
- Find applications for electronics with semiconductors (L2)
- Superconductors are classified based on Meissner’s effects (L2)
- Discuss Meissner’s effect BCS theory, and Josephson effects in the superconductors (L2)

**Download the UNIT-5 Material PDF** |** Reference 2** | **Ref-3**

**Note :** **All jobs Updates Click Here**

- M. N. Avadhanulu, P.G.Kshirsagar & TVS Arun Murthy” A Textbook ofEngineering Physics”– S.Chand Publications 11th Edition, 2019.
- Engineering Physics” by D.K. Bhattacharya and Poonam Tandon, Oxford press(2015).
- Applied Physics from P.K.Palanisamy SciTech publications.

**REFERENCE books:**

- Fundamentals of Physics Fundamentals of Physics Halliday, Resnick and Walker, John Wiley &Sons
- Engineering Physics by M.R.Srinivasan, New Age international publishers (2009).
- Shailendra Sharma, Jyotsna Sharma, ” Engineering Physics,” Pearson Education, 2018
- Engineering Physics Engineering Physics Sanjay D. Jain D. Sahasrabudhe and Girish, University Press
- Semiconductor Physics and DevicesThe basic principle Donald A, Neamen, Mc Graw Hill
- B.K. Pandey, as well as S. Chaturvedi, Engineering Physics, Cengage Learning

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