B. Tech. (Physics-I)

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HY-101E
PHYSICS-I
(COMMON FOR ALL BRANCHES)

UNIT-I
PHYSICAL OPTICS
Interference: Division of wave front-Fresnel's biprism, Division of amplitude–Newton's rings, Michelson interferometer, applications.

Diffraction: Difference between Fraunhofer and Fresnel diffraction. Fraunhofer diffraction through a slit. Plane transmission diffraction grating, its dispersive and resolving powers.

Polarization: Polarised and unpolarized light, double refraction; Nicol prism, quarter and half wave plates, Polarimetry; Biquartz and Laurent's half-shade polarimeters, Simple concepts of photoelasticity.

UNIT-II
Laser: Spontaneous and stimulated emissions, Laser action, characteristics of laser beam-concepts of coherence, He-Ne and semiconductor lasers (simple ideas), applications.

Fibre Optics: Propagation of light in fibres, numerical aperture, single mode and multi mode fibres, applications.

UNIT-III
EM Theory: E.M. wave theory-review of basic ideas, Gauss’s Law, Ampere’s Law and its applications to infinite line charge & Infinite plane ,eMaxwell's equations, simple plane wave equations, simple concepts of wave guides and coaxial cables, Poynting vector.

Dielectrics: Molecular theory, polarization, displacement, susceptibility, dielectric coefficient, permitivity & various relations between these, Gauss's law in the presence of a dielectric, Energy stored in an electric field. Behavior of dielectrics in a.c. field-simple concepts, dielectric losses.

UNIT-IV
Special Theory of Relativity: Michelson-Moreley experiment, Lorentz transformations, variation of mass with velocity, mass energy equivalence.

Nuclear Physics: Neutron Cross-section, Nuclear fission, Moderators, Nuclear reactors, Reactor criticality, Nuclear fusion. Interaction of radiation with matter-basic concepts, radiation detectors-ionisation chamber, G.M. Counter, Scintillation and solid state detectors, cloud chamber and bubble chamber.

TEXT BOOKS:
1. Physics of the Atom - Wehr, Richards & Adair (Narosa)
2. Perspectives of Modern Physics - Arthur Beiser (TMH)
3. Modern Engineering Physics – A.S. Vasudeva (S. Chand)

REFERENCE BOOKS:
1. Electricity and Magnetism – F.W. Sears (Narosa)
2. Physics Vol-I & II – Resnick & Halliday (Wiley Eastern)
3. A Text Book of Optics – Brij Lal & Subramanyam

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Related Words:

Division of Wave, Michelson Interferometer, Fraunhofer and Fresnel Diffraction, Polarization, Nicol Prism, Laser, Laser Action, Fibre Optics, Propagation of Light in Fibres, Numerical Aperture, Single Mode and Multi Mode Fibres, EM Theory, Molecular Theory, Michelson-Moreley Experiment, Lorentz Transformations, Nuclear Physics, Physics of the Atom, Perspectives of Modern Physics, Arthur Beiser, Modern Engineering Physics, A Text Book of Optics