PH6151 ENGINEERING PHYSICS – I  SYLLABUS (REGULATION 2013) ANNA UNIVERSITY (SEMESTER 1)

UNIT I CRYSTAL PHYSICS

(PH6151) Lattice – Unit cell – Bravais lattice – Lattice planes – Miller indices – d spacing in cubic lattice. Calculation of number of atoms per unit cell – Atomic radius – Coordination number. Packing factor for SC, BCC, FCC and HCP structures – Diamond and graphite structures (qualitative treatment). Crystal growth techniques –solution, melt (Bridgman and Czochralski) and vapour growth techniques (qualitative)

UNIT II PROPERTIES OF MATTER AND THERMAL PHYSICS 

Elasticity- Hooke’s law – Relationship between three modulii of elasticity (qualitative) – stress -strain diagram – Poisson’s ratio –Factors affecting elasticity –Bending moment – Depression of a cantilever –Young’s modulus by uniform bending- I-shaped girders Modes of heat transfer- thermal conductivity- Newton’s law of cooling – Linear heat flow – Lee’s disc method – Radial heat flow – Rubber tube method – conduction through compound media (series and parallel)

UNIT III QUANTUM PHYSICS 

Black body radiation – Planck’s theory (derivation) – Deduction of Wien’s displacement law and Rayleigh – Jeans’ Law from Planck’s theory – Compton effect. Theory and experimental verification – Properties of Matter waves – G.P Thomson experiment -Schrödinger’s wave equation – Time
independent and time dependent equations – Physical significance of wave function – Particle in a one dimensional box – Electron microscope – Scanning electron microscope – Transmission electron microscope.

UNIT IV ACOUSTICS AND ULTRASONICS 

Classification of Sound- decibel- Weber–Fechner law – Sabine’s formula- derivation using growth and decay method – Absorption Coefficient and its determination –factors affecting acoustics of buildings and their remedies. Production of ultrasonics by magnetostriction and piezoelectric methods – acoustic grating -Non Destructive Testing – pulse echo system through transmission and reflection modes – A,B and C – scan displays, Medical applications – Sonogram

UNIT V PHOTONICS AND FIBRE OPTICS 

Spontaneous and stimulated emission- Population inversion -Einstein’s A and B coefficients – derivation. Types of lasers – Nd:YAG, CO2 , Semiconductor lasers (homojunction & heterojunction)- Industrial and Medical Applications. Principle and propagation of light in optical fibres – Numerical aperture and Acceptance angle – Types of optical fibres (material, refractive index, mode) – attenuation, dispersion, bending – Fibre Optical Communication system (Block diagram) – Active and passive fibre sensors- Endoscope.