Anna University Question Paper 1st Sem
PH2111 ENGINEERING PHYSICS – I UNIT I ULTRASONICS
Introduction – Production – magnetostriction effect – magnetostriction generator piezoelectric effect – piezoelectric generator- Detection of ultrasonic waves properties –Cavitations – Velocity measurement – acoustic grating – Industrial applications – drilling, welding, soldering and cleaning – SONAR – Non Destructive Testing – pulse echo system through transmission and reflection modes – A,B and C –scan displays, Medical applications – Sonograms UNIT II LASERS Introduction – Principle of Spontaneous emission and stimulated emission. Population inversion, pumping. Einstein’s A and B coefficients – derivation. Types of lasers – He-Ne, CO2 , Nd-YAG, Semiconductor lasers (homojunction & heterojunction) Qualitative Industrial Applications – Lasers in welding, heat treatment, cutting – Medical applications – Holography (construction & reconstruction). UNIT III FIBER OPTICS & APPLICATIONS Principle and propagation of light in optical fibres – Numerical aperture and Acceptance angle – Types of optical fibres (material, refractive index, mode) – Double crucible technique of fibre drawing – Splicing, Loss in optical fibre – attenuation, dispersion, bending – Fibre optical communication system (Block diagram) – Light sources – Detectors – Fibre optic sensors – temperature & displacement – Endoscope. UNIT IV 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 – Matter waves – 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 V CRYSTAL PHYSICS 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 – NaCl, ZnS, diamond and graphite structures – Polymorphism and allotropy – Crystal defects – point, line and surface defects- Burger vector.
TEXT BOOKS 1. R. K. Gaur and S.C. Gupta, ‘Engineering Physics’ Dhanpat Rai Publications, New Delhi(2003) 2. M.N. Avadhanulu and PG Kshirsagar, ‘A Text book of Engineering Physics’, S.Chand and company, Ltd., New Delhi, 2005.
REFERENCES 1. Serway and Jewett, ‘Physics for Scientists and Engineers with Modern Physics’, 6 Th Edition, Thomson Brooks/Cole, Indian reprint (2007) 2. Rajendran, V and Marikani A, ‘Engineering Physics’ Tata McGraw Hill Publications Ltd, III Edition, New Delhi, (2004). 3. Palanisamy, P.K., ‘Engineering Physics’ Scitech publications, Chennai, (2007). 4. Jayakumar. S, ‘Engineering Physics’, R.K. Publishers, Coimbatore, (2003). 5. Chitra Shadrach and Sivakumar Vadivelu, ‘Engineering Physics’, Pearson Education, New Delhi, (2007).
Anna University Question Paper 1st Sem Textile Engineering Engineering Physics