JNTUK R20 1-1 Engineering Physics Material PDF Download


JNTUK R20 1-1 Engineering Physics Material PDF Download

Students those who are studying JNTUK R20 Civil, Mech, Chemical Branches, Can Download Unit wise R20 1-1 Engineering Physics or Applied Physics Material/Notes PDFs below.


JNTUK R20 1-1 Engineering Physics Material PDF Download


  • Bridging the gap between the physics in school at 10+2 level and UG level engineering courses.
  • To identify the importance of the optical phenomenon i.e. interference, diffraction and polarization related to its Engineering applications
  • Understand the mechanism for emission of light, utility of lasers as coherent light sources for low and high energy applications, study of propagation of light through optical fibers and their implications in optical communications.
  • Open new avenues of utility for dielectric and magnetic materials as potential sources for micro devices.
  • Familiarize the concepts of theoretical acoustics for their practical utility in engineering acoustics. Explanation for the significance of ultrasound and its application in NDT application.
  • Enlighten the periodic arrangement of atoms in Crystalline solids by Bragg’s law – Learning the structural analysis through X-ray diffraction.


Wave Optics

Interference: Principle of superposition –Interference of light – Interference in thin films (Reflection Geometry) & applications -Colors in thin films- Newton’s Rings- Determination of wavelength and refractive index.

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

Polarization: Introduction-Types of polarization – Polarization by reflection, refraction and Double refraction – Nicol’s Prism -Half wave and Quarter wave plates

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


Lasers and Fiber optics

Lasers: Introduction – Characteristics of laser – Spontaneous and Stimulated emissions of radiation – Einstein’s coefficients – Population inversion –Lasing action- Pumping mechanisms – Ruby laser – He-Ne laser – Applications 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.

Download UNIT-2 Material PDF | Reference-2


Engineering Materials

Dielectric Materials: Introduction – Dielectric polarization – Dielectric polarizability, Susceptibility and Dielectric constant – Types of polarizations- Electronic (Quantitative), Ionic (Quantitative) and Orientation polarizations (Qualitative) – Lorentz internal field- Clausius-Mossotti equationPiezoelectricity.

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

Download UNIT-3 Material PDF


Acoustics and Ultrasonics

Acoustics: Introduction – requirements of acoustically good hall– Reverberation – Reverberation time– Sabine’s formula (Derivation using growth and decay method) – Absorption coefficient and its determination – Factors affecting acoustics of buildings and their remedial measures.

Ultrasonics: Introduction – Properties – Production by magnetostriction and piezoelectric methods – Detection – Acoustic grating – Non Destructive Testing – pulse echo system through transmission and reflection modes – Applications.

Download UNIT-4 Material PDF | Reference-2


Crystallography and X-ray diffraction

Crystallography: Space lattice, Basis, Unit Cell and lattice parameters – Bravais Lattice – crystal systems (3D) – coordination number – packing fraction of SC, BCC & FCC – Miller indices – separation between successive (hkl) planes.

X-ray diffraction: Bragg’s law – X-ray Diffractometer – crystal structure determination by Laue’s and powder methods.

Download UNIT-5 Material PDF


  1. Engineering Physics – Dr. M.N. Avadhanulu & Dr. P.G. Kshirsagar, S. Chand and Company
  2. Engineering physics – D.K. Battacharya and Poonam Tandon, Oxford University press.
  3. Engineering Physics by P.K.Palanisamy SciTech publications.


  1. Fundamentals of Physics – Halliday, Resnick and Walker, John Wiley &Sons
  2. Engineering Physics – M.R.Srinivasan, New Age Publications
  3. Engineering Physics – D K Pandey, S. Chaturvedi, Cengage Learning
  4. Engineering Physics – Sanjay D. Jain, D. Sahasrambudhe and Girish, University Press

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  1. me to admin – you are seeing my comments and removingit's not comments I'm telling you upload materials fastly because JNTU is one of the largest University's in India……

  2. Please extend a week the exams date the syllabus is not completed.
    For every subject there are 2 units to complete please extend the exams date and we also not got any revisions.
    We need some time to study all subjects

  3. thank you for your efforts sir,
    the materials are very handy and informative ,
    hope the remaining unit's material will be uploaded soon..

  4. Sir
    Already mid exams time table also released.but physics material is not provided
    Please provide it sir
    Thanking you


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