UNIVERSITY OF MADRAS
B.Sc. DEGREE COURSE IN ELECTRONICS SCIENCE
SEMESTER SYSTEM WITH CREDITS
(Effective from the Academic Year 2003-2004)

Semester III - Allied III - Basic Physics-I

Duration: 3 hrs
Maximum Marks: 75
Credits: 3

Unit-1

Moment of inertia- Radius of gyration - Moment of inertia of a circular ring, circular disc, solid sphere -Kinetic energy of a rolling object- Acceleration of a body rolling down an inclined plane - Uniform circular motion - Centripetal force - Centrifuge - Banking of curved tracks.
Gravitation : Newton's law - Determination of G by Boy's method - Mass and mean density of earth - Variation of g with altitude, depth and latitude - Escape velocity- Weightlessness.

Unit-2

Elasticity : Young's modulus - Bending moment - Bending of beams - Youngs modulus by non-uniform bending - Energy stored in a wire - Torsion in a wire -- Torsional oscillations - Determination of rigidity modulus by static torsion - Definition of Poisson's ratio.

Unit-3

Viscosity:
Streamline and turbulent flow - Comparison of viscosities by burette method - Oswald's viscometer - Stoke's law - Terminal velocity - Viscosity of a highly viscous liquid - Lubrication.
Surface Tension : Molecular theory of surface tension - Pressure difference across liquid surface - Formation of drops and bubbles - Excess of pressure inside a soap bubble - Surface tension of liquid by Jaeger's method - Variation of surface tension with temperature.

Unit-4

Thermal Physics:

Kinetic theory of gases : Vander Wal's equation of state - Derivation of critical constants - Joule-Kelvin effect - Explanation of Joule-Kelvin effect Temperature of inversion - Production of low temperatures - Liquefaction of gases - Linde's process.
Thermal conductivity : Coefficient of thermal conductivity - Thermal conductivity of a bad conductor by Lee's disc method.
Thermodynamics : Heat engine - Statement of first law of thermodynamics - Statement of second law of thermodynamics - Reversible and irreversible processes - Carnot theorem (without proof).

Unit-5

Intensity and loudness - Decibel - Intensity levels - Velocity of sound in a gas by Kundt's tube - Measurement of AC frequency.
Acoustics of buildings and Ultrasonics : Reverberation - Time of reverberation - Sabine's formula - Absorption coefficient - Production, detection and uses of ultrasonic waves - Sound recording and reproduction - Fourier analysis.

Books for study and reference

1. Mechanics - Narayanamurthy and others.
2. Elements of Properties of Matter - Brijlal and Subramanyam.
3. Heat and Thermodynamics - J.B.Rajam.
4. A Text Book of Sound - M.N.Srinivasan, Himalaya Publishing House.
5. Sound - Govindarajan, Murugiyan and Jayaraman.
6. College Physics - Weber, Manning and White.
7. Advanced Level Physics Nelkon and Parker.
8. University Physics - Sears and Zemansky.
9. Fundamentals of Physics, 6^th Edition, by D.Halliday, R.Resnick and J.Walker, Wiley, NY, 2001.
10. Physics, 4^th Edition, Vols 1, 2 & 2 Extended by D.Halliday, R.Resnick and K.S.Krane, Wiley, NY, 1994.
11. CRC Handbook of Physics & Chemistry, 80^th Ed., CRS Press, NY, 1999.
12. The Feynman Lectures on Physics, Vols. 1, 2, and 3, by R. P. Feynman, RB Leighton and M Sands, Narosa, New Delhi, 1998.
13. Basic Electronics, 6 ^thEdition by B. Grob, McGraw- Hill, NY, 1989.