DEPARTMENT OF PHYSICS

R.V. COLLEGE OF ENGINEERING (An autonomous institution affiliated to VTU, Belagavi) Mysore, Bangalore-560059

Course Title: Engineering Physics Course Code: 18PH12/22

Total Contact Hours: 36 Credits: 05

SEE Marks: 150 CIE Marks:150

Semester: ODD Academic Year:2018-19

Lesson Plan Author: Dr. Avadhani D.N Date: 30.07.2018

Course Learning Objectives: The students will be able to1 Understand the principles of Lasers, Optical fibers and its application in modern technology.

2Understand the principles of Quantum mechanics and its applications to diverse fields like lasersand electrical properties of materials.

3 Analyze the Electrical properties of the conductors and semiconductors.4 Explain the Elasticity and Dielectric properties of materials.

5Solve differential equations of harmonic oscillators to analyze experimental situationsapplicable to engineering field.

Week Day/Hour

Unit (Hour)

Main topic Sub topic Cos

1 1 I (1) Lasers Introduction: Interaction of radiation withmatter: Absorption and Emission, Expressionfor energy density

1

2 I(2) Condition for laser action, Requisites of laser action, optical resonator. Principle of He-Ne laser

1,2

3 I(3) Construction and working of He-Ne laser Applications: Measurement of pollutants in atmosphere.

1,2

T Tutorial 1,3T Tutorial 2,3

II 4 I(4) Optical fibers

Introduction to optical fiber: Propagation mechanism, angle of acceptance, and NA derivation, refractive index change (∆)

1

5 I(5) Modes of Propagation and types of optical fibers, V number, Intermodal dispersion.

1,2

6 I(6) Attenuation: Cause of attenuation and expression for attenuation coefficient.

1,2

T Tutorial 1,3T Tutorial 1,3

III 7 I(7) Application of Optical fibers: p to p communication.

1,2

8 II(1) Quantum Mechanics

Introduction to matter waves, de Broglie hypothesis, properties of matter waves, wavelength of matter waves.

1

9 II(2) Uncertainty principle: Statement, significance, Application of Uncertainty principle:

1,2

broadening of spectral line.T Tutorial 1,3T Tutorial 1,3

IV 10 II(3) Setting up of one dimensional time independent Schrodinger’s wave equation (TISE). Significance of Wave function

1,2

11 II(4) Normalization of wave function, Properties of wave function, Eigen value and Eigen function.

1

12 II(5) Applications of SWE: particle in a box 1,2T Tutorial 1,3T Tutorial 1,3

V 13 II(6) Extension of SWE to three dimensional well and free particle. Square well potential: setting up of TI SE in three regions and matching of boundary conditions.

1,2

14 II(7) Review of Classical free electron theory, Quantum free electron theory and Density of states

1

15 III(1) Electrical conductivityin metals and semiconductors and Dielectrics

Fermi factor. Fermi energy, carrier concentration in metals, variation of Fermi factor with temperature. Draw backs of QFET.

1,2

T Tutorial 1,3T Tutorial 1,3

VI 16 III(2) Hall Effect in metals: Derivation of Hall coefficient in metals. Introduction to Band theory of solids, introduction to semiconductors.

1,2

17 III(3) Derivation of electron concentration in intrinsic semiconductor, expression for hole concentration in valence band.

1

18 III(4) Derivation of intrinsic carrier concentration, Fermi level in intrinsic semiconductors, derivation of energy gap of an intrinsic semiconductor.

1,2

T Tutorial 1,3T Tutorial 1,3

VII 19 III(5) Types of extrinsic semiconductors, doping methods (qualitative). Variation of carrier concentration in extrinsic semiconductors with temperature.

1,2

20 III(6) Variation of Fermi level in extrinsic semiconductors with temperature and impurity concentration.

1,2

21 III(7) Hall effect in semiconductors. 1,2T Tutorial 1,2,3T Electric dipole, Dipole moment, Polarization

of dielectric materials: Types of polarizations.1,2

22 III(8) Internal field in solids for one dimensional infinite array of dipoles (Lorentz field) and Claussius - Mossotti equation (qualitative). Numerical problems

1,3

23 IV(1) Elastic Introduction to the concepts of stress, strain. 1,2

properties of materials

Hooke’s law, Elasticity, plasticity, strain hardening and strain softening, failure (fracture/fatigue)

24 IV(2) Different elastic moduli, Equivalence relations 1,2T Tutorial 1,3T Tutorial 1,3

IX 25 IV(3) Derivation of Inter relation between bulk modulus, Youngs modulus, rigidity modulus and poisson ratio

1,2

26 IV(4) Bending of beams: Neutral surface and neutral plane, expression for bending moment of a beam (Derivation), expression for circular and rectangular cross section

1,2

27 IV(5) Derivation of Young’s modulus for single cantilever.

1,2

T Tutorial 1,3T Tutorial 1,3

X 28 IV(6) Torsion of cylinder: Expression for couple per unit twist of a solid cylinder (Derivation).

1,2

29 IV(7) Problems on couple per unit twist and torsion pendulum.

1,2,3

30 V(1) Oscillations Introduction to SHM, Free vibrations. Examples of Simple harmonic oscillators- Spring and Mass system.

1,2

T Tutorial 1,3T Tutorial: Spring constant for series and parallel

combination, expression for period of a Torsional pendulum.

1,2,3

XI 31 V(2) Damped oscillations: Differential equations ofdamped oscillations and solutions.

1,2

32 V(3) Three cases of critical damping, heavydamping and low damping. Numericals

1,2

33 V(4) Forced oscillations: Differential equations of forced oscillation and solutions,

1,2

T Tutorial 1,3T Tutorial 1,2,3

XII 34 V(5) Forced oscillations: Three stages offrequencies (i) low driving frequencies (ii)high driving frequencies (iii) resonancefrequencies

1,2

35 V(6) Resonance. Sharpness of resonance and qualityfactor Example for electrical resonance (LC,LCR circuit).

1,2

36 V(7) Discussion of resonance and quality factor of LCR series circuits (innovative lab experiments)

1,2,3

T Tutorial 1,3T Tutorial 1,3

Course Outcomes: After completing the course, the students will be able toCO1: Explain the fundamentals of lasers & optical fibers, quantum mechanics, electrical conductivity in

metals and semiconductors, dielectrics, elastic properties of materials, oscillations and relate them toengineering applications.

CO2: Apply and Demonstrate lasers & optical fibers, quantum mechanics, electrical properties, dielectricproperties, elastic properties of materials, oscillations through experiential learning.

CO3: Formulate and Evaluate lasers & optical fibers, quantum mechanics, electrical properties, dielectricproperties, elastic properties of materials, oscillations towards specific engineering applications.

CO4: Design and Develop innovative experiments.

Reference Books1. Engineering Physics, R K Gaur and S L Gupta, 2011, Dhanpat Rai Publications, ISBN:

97881899282232. A Textbook of Engineering Physics, P G Kshirsagar, M. N. Avadhanulu, 2010, S. Chand,

ISBN : 13-97881219081773.

Fundamentals of Physics- Resnick, Halliday and Walker, 9th Ed, 2011, John Wiley & Sons,ISBN: 9780470547915

4.

Physics for Degree students, C.L. Arora and Dr. P. S. Hemne, revised 2010, S Chand, ISBN:9788121933506