## 103 Physics (Common to all Branches)

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Lectures: 3 Periods/Week | Sessional Marks: 30 |

University Exam: 3 Hours | University Examination Marks: 70 |

**UNIT-I****(20 Periods)**

**Ultrasonics & Optics :**

Ultrasonics- Production of Ultrasonics by Magnetostriction & Piezoelectric oscillator
methods, Detection of Ultrasonics by Kundt’s tube and acoustic grating method,
applications of Ultrasonics in engineering & medicine. Lissajous' figures for time
periods with Ratios 1:1 and 1:2, applications of Lissajous' figures.

**Optics:**
Superposition principle, Stokes principle (Phase change on reflection) -Interference
in thin films due to reflected light(cosine law) -Michelson's interferometer
principle, construction, working and applications (Determination of wave length of
monochromatic source & for resolution of two closely lying wavelengths).

**Diffraction:**
Fraunhoffer diffraction due to a single slit, Plane diffraction grating, resolving
power of a grating using Rayleigh’s criterion. Polarization: double refraction,
Nicol prism, quarter wave plate, Production and detection of circular and elliptical
polarizations (qualitative), Optical activity, Electro-optic and Magneto-optic
effects ( Kerr & Faraday effects).

**UNIT-II****(20 Periods)**

**Electicity & Electromagnetism:**

Gauss's law in electricity (statement and proof) and its applications: Coulomb’s law
from Gauss law, line of charge, non-conducting infinite sheet, Charged non-conducting
sphere.

Circulating charges and Cyclotron principle& working, Hall effect, Biot-Savart's law-
B for a long wire and circular loop, Faraday's law of induction- Lenz's law-
induced electric fields ,Gauss’ law for magnetism ,Inductance, Energy storage in a
magnetic field, Electromagnetic oscillations(quantitative),Displacement current,
Maxwell's equations (Qualitative treatment),Electromagnetic waves equation and
velocity, A.C. Circuit containing series LCR circuit (Resonance condition).

**UNIT-III****(18 Periods)**

**Modern Physics:**

Planck’s theory of black body radiation, Dual nature of light, Compton effect,
Matter waves - de Broglie’s concept of matter waves - Davisson and Germer
experiment - Heisenberg's uncertainty principle and applications(non existence
of electron in nucleus, finite width of spectral lines). One dimensional time
independent Schrodinger's wave equation - Physical significance of wave function -
Particle in a box(one dimension)- Radio Isotopes-applications in medicine and
industry, Qualitative treatment (without derivation) of Fermi -Dirac distribution
function and Fermi-energy level concept in semiconductors.

**UNIT-IV****(17 Periods)**

**Advanced PhysicsAdvanced Physics:**

**Lasers:-**Spontaneous emission -stimulated emission – Population inversion
– Solid State (Ruby) laser – Gas (He-Ne) laser – Semiconductor(Ga-As)
laser – Applications of lasers. Holography Principle, Recording , reproduction
and applications.

**Optical fibers:-** Structure of optical fiber, types of optical fibers,
Numerical aperture – fiber optics in communication and its advantages.

**Super conductivity:-** First experiment, critical parameters(TC,HC,IC)
Meissner effect, types of superconductors, Applications of Superconductors.

**Optoelectronic devices:-** Qualitative treatments of -- Photo diode, LED ,
LCD and Solar cell and its applications.

Nano Technology (Basic concepts only) and its applications.

**Text Books**

- Physics Part I and II – Halliday and Resinick.1.Physics Part I and II – Halliday and Resinick.
- Engineering physics – Gaur & Gupta

**Reference Books**

- Physics for engineers – M.R.Srinivasan.Physics for engineers – M.R.Srinivasan.
- Engineering physics – M.Arumugam.
- Modern Engineering Physics - A.S Vasudeva.