Sessional : 50 Marks

Exam : 100 Marks

Section A

Interference : Coherent sources, conditions for sustained interference. Division of Wave-Front – Fresnel’s Biprism, Division of Amplitude- Wedge-shaped film, Newton’s Rings, Michelson Interferometer, applications (Resolution of closely spaced spectral lines, determination of wavelengths).

Diffraction: Difference between interference and diffraction Fraunhofer and Fresnel diffraction. Fraunhofer diffraction through a single slit, Plane transmission diffraction grating, absent spectra, dispersive power, resolving power and Rayleigh criterion of resolution.

Section B

Polarisation: Polarised and unpolarised light, Uniaxial crystals double refraction, Nicol prism, quarter and half wave plates, Detection and Production of different types of polarized light, Polarimetry; Optical and specific rotation, Biquartz and Laurent’s half shade polarimeter.

LASER

Spontaneous and Stimulated emission, Laser action, characteristics of laser beam-concept of coherence , spatial and temporal coherence , He-Ne and semiconductor lasers (simple ideas), applications

Section C

Fibre Optics

Propagation of light in optical fibres, numerical aperture, V-number, single and multimode fibres, attenuation, dispersion, applications.

Dielectrics

Molecular theory, polarization, displacement vector, electric susceptibility, dielectric coefficient, permittivity & various relations between these, Gauss’s law in the presence of a dielectric, Energy stored in a uniform electric field, concept of local molecular fields and Claussius Mossotti relation.

Section D

Special Theory Of Relativity

Michelson’s Morley Experiment, Postulates of Special Theory of Relativity, Lorentz transformations, Consequences of LT (length contraction and time dilation), addition of velocities, variation of mass with velocity, mass energy equivalence.

Superconductivity

Introduction (Experimental survey), Meissner effect, London equations, Hard and Soft superconductors, Elements of BCS Theory.

Text Books :

Perspectives of Modern Physics – Arthur Beiser (TMH)

Optics – Ajoy Ghatak (TMH)

Modern Physics for Engineers – S.P.Taneja (R. Chand)

Engineering Physics – SatyaPrakash (Pragati Prakashan)

Modern Engineering Physics – A.S.Vasudeva (S. Chand)

Reference Books :

Fundamentals of Physics – Resnick & Halliday (Asian Book)

Note:

Examiner will set 9 questions in total, with two questions from each section and one question covering all sections which will be Q.1. This Q.1 is compulsory and of short answers type. Each question carries equal mark (20 marks). Students have to attempt 5 questions in total.