EFFECT FROM THE ACADEMIC YEAR 2014 - 2015

 

PH 101

ENGINEERING PHYSICS

 

Instruction                                                                                                                                                                                          3  Periods per week

Duration of University Examination                                                                                                                                                      3  Hours

University Examination                                                                                                                                                                        75Marks

Sessional                                                                                                                                                                                            25Marks

 

UNIT - 1(20 Periods)

1.1  Interference : Coherent and non-coherent sources - Division of amplitude and division of wave front - interference in thin films(reflected light) - Newton's rings - Fresnel's biprism.

1.2 Diffraction : Distinction between Fresnel and Fraunhoffer diffraction - Diffraction at a single slit - Double slit diffraction - Diffraction grating(N-slits)

1.3 Polarization : Introduction - Malus's law - Double refraction - Nicol's prism - Quarter wave and half wave plates - Optical activity -Laurent's half shade polari meter.

1.4 Lasers and Holography : Characteristics of Lasers - Spontaneous and stimulated emission of radiation - Population inversion - Ruby laser - Helium-Neon Laser - Semiconductor Laser - Applications of lasers.Basic principles of holography - Construction and reconstruction of image on hologram - Applications of holography.


UNIT - II (16 Periods)

2.1 Elements of Statistical Mechanics : Maxwell-Boltzmann Statistics- Bose Einstein statistics - Fermi-Dirac statistics - Photon gas -Planck's law of black - body radiation - Rayleigh Jean's law and Wien's law.

2.2 Wave Mechanics : Physical significance and properties of wave function - Schrodinger's time dependent and time independent wave equations - Particle in an infinite Square well potential (particle in a box).

2.3 Fiber Optics : Introduction - Propagation of light through an optical fiber - Critical angle - Acceptance angle - Numerical aperture (NA)- Types of optical fibers and refractive index profiles - Fibre drawing process (double crucible method) - Application of optical fibers.



UNIT - III (20 Periods)


3.1  Crystallography : Intrtoduction - Space lattice - Basis - Unit cell -Bravais lattices and crystal systems - Atomic radius - Coordination numbers - Effective number of atoms per unit cell - Packing fraction (for simple cubic, body centered cubic and face centered cubic crystals) - Miller Indices - Bragg's law - Experimental determination of lattice constant by powder diffraction method. Classification of defects in crystals (in brief) - Concentration of Schottky defects in metals and in ionic crystals - Concentration of Frenkel defects in a crystal.


3.2 Band Theory of Solids : Classical free electron theory (qualitative)- Energy band formation in solids - Kronig - Penney model (qualitative treatment) - Electron gas - Fermi energy and Fermi level in metals - Classification of solids into conductors, semiconductors and insulators.


3.3 Semiconductors : Intrinsic and Extrinic semiconductors - Concept of hole - Concept of Fermi level in semiconductor - Carrier concentration and conductivity in intrinsic semiconductors - P-N junction diode and its I-V characteristics - LED - Thermistor - Hall effect.


UNIT- IV (18 Periods)


4.1  Dielectric Materials : Dielectrics - Types of dielectric polarizations - Expression for electronic polarization - Ionic, orientational and space-charge polarizations - Frequency and temperature dependence of dielectric polarizations - Determination of dielectric constant by capacitance Bridge method - Ferro electricity - Barium titanate -Applications of Ferroelectrics.

4.2 Magnetic Materials : Classification of magnetic materials - Dia, para, ferro, antiferro and ferrimagnetism - Weiss molecular field theory of ferromagnetism - Magnetic domains - Magnetic hysteresis curve -Soft and hard magnetic materials - Ferrites and their applications.

4.3    Superconductivity - General properties of superconductors -Meissner effect - Type I and Type II superconductors - BCS Theory (in brief) - High Tc supercoductors (in brief) - Applications of superconductors.


UNIT - V (16 Periods)

5.1 Thin Films : Distinction between bulk, thin films and nano materials - Thin film preparation techniques : Physical vapor deposition (PVD).Thermal evaporation, Electron beam evaporation, Sputtering and chemical vapour deposition (CVD) - Applications of thin films - Solar cells.

5.2 Nano materials : Zero dimensional materials - Properties of materials at reduced size - Surface to volume ratio at nano scale -Quantum confinement - Preparation of nanomaterials : bottom-up methods (sol gel, sputtering and CVD),Top-down methods (ball milling) - Elementary ideas of carbon nanotubes - Applications.

5.3 Experimental Techniques for Characteristics of Materials :X-ray fluorescence -Atomic force microscopy (basics) - Electron microscopy (SEM and TEM)

 

Suggested Reading :

1.       M.S. Avadhanulu and P.G. Kshirasagar, A Text Book of Engineering Physics, S. Channd & Co., 9th edition, 2010.

2.       R.K. Gaur and S.L. Gapta, Engineering Physics, Dhanpat Rai Publications, 8th edition, 2001.

3.       B.K. Pandey and S. Chaturvedi, Engineering Physics, Cenage Learning India (P) Ltd., 2012.

4.       R. Murugesan and K. Sivaprasath, Modern Physics, S. Chand & Company, 13th edition, 2007.

5.       David Halliday, Robert Resnick and Kenneth S. Krane, Physics (Vol. 2), Wiley-India (P) Ltd., 5th edition, 2007.

6.       A. Goswami, Thin Film Fundamentals, New Age Internatational, 2007.

7.       A.K. Bandhopadyaya, Nano Materials, New Age International, Ist edition, 2007.

8.       C.M. Srivastava and C. Srinivasan, Science of Engg. Materials, New Age International, 2002.


 
 
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