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**ENGINEERING PHYSICS****[As per Choice Based Credit System (CBCS) scheme]****(Effective from the academic year 2015 -2016)****SEMESTER - I/II**

Subject
Code - 15PHY12/15PHY22

IA
Marks - 20

Number
of Lecture Hours/Week - 04

Exam
Marks - 80

Total
Number of Lecture Hours - 50

Exam
Hours - 03

CREDITS
- 04

**COURSE OBJECTIVES:**

The
Objective of this course is to make students learn and understand basic
concepts and principles of physics to analyze practical engineering problems
and apply its solutions effectively and meaningfully. To understand building up
of models, design issues, practical oriented skills and problem solving
challenges are the great task of the course. To know about shock waves and
practical applications is the prime motto to introduce new technology at the
initial stage of Engineering.

**Module -1**

**Modern Physics and Quantum Mechanics**

Black
body radiation spectrum, Assumptions of quantum theory of radiation, Plank’s
law, Weins law and Rayleigh Jeans law, for shorter and longer wavelength
limits. Wave Particle dualism, deBroglie hypothesis. Compton Effect. Matter
waves and their Characteristic properties, Definition of Phase velocity and
group velocity, Relation between phase velocity and group velocity, Relation
between group velocity and particle velocity.
Heisenberg’s uncertainity principle and its application, (Non-existence
of electron in the nucleus).Wave function, Properties and physical significance
of wave function, Probability adensity and Normalization of wave function.
Setting up of one dimensional time independent Schrodinger wave equation. Eigen
values and Eigen functions. Application of Schrodinger wave equation for a particle in a potential well of
infinite depth and for free particle.

10
Hours

**Module -2**

**Electrical Properties of Materials**

Free–electron
concept (Drift velocity, Thermal velocity, Mean collision time, Mean free path,
relaxation time). Failure of classical
free electron theory. Quantum free electron theory, Assumptions, Fermi factor,
density of states (qualitative only) Fermi–Dirac Statistics. Expression for
electrical conductivity based on quantum free electron theory, Merits of
quantum free electron theory. Conductivity of Semi conducting materials,
Concentration of electrons and holes in intrinsic semiconductors, law of mass
action. Temperature dependence of
resistivity in metals and superconducting materials. Effect of magnetic field
(Meissner effect). Type I and Type II superconductors–Temperature dependence of
critical field. BCS theory (qualitative). High temperature superconductors.
Applications of superconductors –. Maglev vehicles. 10
Hours

**Module – 3**

**Lasers and Optical Fibers**

Einstein’s
coefficients (expression for energy density). Requisites of a Laser system.
Condition for laser action. Principle, Construction and working of CO2 laser
and semiconductor Laser. Applications of Laser – Laser welding, cutting and
drilling. Measurement of atmospheric pollutants. Holography–Principle of
Recording and reconstruction of images.
Propagation mechanism in optical fibers. Angle of acceptance. Numerical
aperture. Types of optical fibers and modes of propagation. Attenuation, Block
diagram discussion of point to point communication, applications.

10
Hours

**Module-4**

**Crystal Structure**

Space
lattice, Bravais lattice–Unit cell, primitive cell. Lattice parameters. Crystal
systems. Direction and planes in a crystal. Miller indices. Expression for
inter – planar spacing. Co-ordination number. Atomic packing factors
(SC,FCC,BCC). Bragg’s law, Determination of crystal structure using Bragg’s

X–ray
difractometer. Polymarphism and Allotropy. Crystal Structure of Diamond,
qualitative discussion of Pervoskites.

10
Hours

**Module-5**

**Shock waves and Science of Nano Materials**

Definition
of Mach number, distinctions between- acoustic, ultrasonic, subsonic and
supersonic waves. Description of a shock wave and its applications. Basics of
conservation of mass, momentum and energy. Normal shock equations
(Rankine-Hugonit equations). Method of creating shock waves in the laboratory
using a shock tube, description of hand operated its characteristics.

Introduction
to Nano Science, Density of states in
1D, 2D and 3D structures. Synthesis : Top–down and Bottom–up approach, Ball
Milling and Sol–Gel methods.

CNT
– Properties, synthesis: Arc discharge, Pyrolysis methods, Applications.

Scanning
Electron microscope: Principle, working and applications.

10 Hours

**Course outcomes:**

On
Completion of this course, students are able to –

•
Learn and understand more about basic principles and to develop problem solving
skills and implementation in technology.

•
Gain Knowledge about Modern physics and quantum mechanics will update the basic
concepts to implement the skills.

•
Study of material properties and their applications is the prime role to
understand and use in engineering applications and studies.

•
Study Lasers and Optical fibers and its applications are to import knowledge
and to develop skills and to use modern instruments in the engineering
applications.

•
Understand Crystal structure and applications are to boost the technical skills
and its applications.

•
Expose shock waves concept and its applications will bring latest technology to
the students at the first year level to develop research orientation programs
at higher semester level.

•
Understand basic concepts of nano science and technology.

**Question paper pattern:**

•
The question paper will have ten questions.

•
Each full Question consisting of 16 marks

•
There will be 2 full questions(with a maximum of four sub questions) from

each
module.

•
Each full question will have sub questions covering all the topics under a

module.

•
The students will have to answer 5 full questions, selecting one full question

from
each module.

Text Books:

1.
Wiley precise Text, Engineering Physics, Wiley India Private Ltd., New Delhi.
Book series – 2014, 2. Dr. M.N.
Avadhanulu, Dr. P.G.Kshirsagar, Text Book of Engineering Physics, S Chand
Publishing, New Delhi - 2012

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