Sub Code : PH3151
Sub Name : ENGINEERING PHYSICS
COURSE OBJECTIVES
- To make the students effectively to achieve an understanding of mechanics.
- To enable the students to gain knowledge of electromagnetic waves and its applications.
- To introduce the basics of oscillations, optics and lasers.
- Equipping the students to be successfully understand the importance of quantum physics.
- To motivate the students towards the applications of quantum mechanics.
UNIT I
MECHANICS
Multi-particle dynamics: Center of mass (CM) – CM of continuous bodies – motion of the CM – kinetic
energy of system of particles. Rotation of rigid bodies: Rotational kinematics – rotational kinetic energy
and moment of inertia - theorems of M .I –moment of inertia of continuous bodies – M.I of a diatomic
molecule - torque – rotational dynamics of rigid bodies – conservation of angular momentum – rotational
energy state of a rigid diatomic molecule - gyroscope - torsional pendulum – double pendulum –
Introduction to nonlinear oscillations.
UNIT II
ELECTROMAGNETIC WAVES
The Maxwell’s equations - wave equation; Plane electromagnetic waves in vacuum, Conditions on the
wave field - properties of electromagnetic waves: speed, amplitude, phase, orientation and waves in
matter - polarization - Producing electromagnetic waves - Energy and momentum in EM waves:
Intensity, waves from localized sources, momentum and radiation pressure - Cell-phone reception.
Reflection and transmission of electromagnetic waves from a non-conducting medium-vacuum interface
for normal incidence
UNIT III
OSCILLATIONS, OPTICS AND LASERS
Simple harmonic motion - resonance –analogy between electrical and mechanical oscillating systems
- waves on a string - standing waves - traveling waves - Energy transfer of a wave - sound waves -
Doppler effect. Reflection and refraction of light waves - total internal reflection - interference –Michelson
interferometer –Theory of air wedge and experiment. Theory of laser - characteristics - Spontaneous
and stimulated emission - Einstein’s coefficients - population inversion - Nd-YAG laser, CO2 laser,
semiconductor laser –Basic applications of lasers in industry.
UNIT IV
BASIC QUANTUM MECHANICS
Photons and light waves - Electrons and matter waves –Compton effect - The Schrodinger equation
(Time dependent and time independent forms) - meaning of wave function - Normalization –Free
particle - particle in a infinite potential well: 1D,2D and 3D Boxes- Normalization, probabilities and the
correspondence principle.
UNIT V
APPLIED QUANTUM MECHANICS
The harmonic oscillator(qualitative)- Barrier penetration and quantum tunneling(qualitative)- Tunneling
microscope - Resonant diode - Finite potential wells (qualitative)- Bloch’s theorem for particles in a
periodic potential –Basics of Kronig-Penney model and origin of energy bands.
COURSE OUTCOMES
After completion of this course, the students should be able to
- Understand the importance of mechanics.
- Express their knowledge in electromagnetic waves.
- Demonstrate a strong foundational knowledge in oscillations, optics and lasers.
- Understand the importance of quantum physics.
- Comprehend and apply quantum mechanical principles towards the formation of energy bands.
TEXT BOOKS
- D.Kleppner and R.Kolenkow. An Introduction to Mechanics. McGraw Hill Education (Indian Edition), 2017.
- E.M.Purcell and D.J.Morin, Electricity and Magnetism, Cambridge Univ.Press, 2013.
- Arthur Beiser, Shobhit Mahajan, S. Rai Choudhury, Concepts of Modern Physics, McGraw-Hill (Indian Edition), 2017.
REFERENCES
- R.Wolfson. Essential University Physics. Volume 1 & 2. Pearson Education (Indian Edition), 2009.
- Paul A. Tipler, Physic – Volume 1 & 2, CBS, (Indian Edition), 2004.
- K.Thyagarajan and A.Ghatak. Lasers: Fundamentals and Applications, Laxmi Publications, (Indian Edition), 2019.
- D.Halliday, R.Resnick and J.Walker. Principles of Physics, Wiley (Indian Edition), 2015.
- N.Garcia, A.Damask and S.Schwarz. Physics for Computer Science Students. Springer- Verlag, 2012.
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