Syllabus

Course Code: EP-301    Course Name: Thermal Physics

MODULE NO / UNIT COURSE SYLLABUS CONTENTS OF MODULE NOTES
1 KINETIC THEORY OF GASES-I
Assumption of Kinetic theory of gases, pressure of an ideal gas (with derivation), Kinetic interpretation of Temperature, Ideal Gas equation, Degree of freedom, Law of equipartition of energy and its application for specific heat of gases, Real gases, Vander Wall’s equation, Brownian motion (Qualitative).
2 KINETIC THEORY OF GASES-II
Maxwell’s distribution of speed and velocities (derivation required), Experimental verification of Maxwell’s law of speed distribution: most probable speed, average and r.m.s. speed, Mean free path, Transport of energy and momentum, Diffusion of gases
3 THERMODYNAMICS-I
Thermodynamic system and Zeroth law of thermodynamics, First law of thermodynamics and its limitations, Reversible and irreversible process, Second law of thermodynamics and its significance, Carnot theorem, Absolute scale of temperature, Absolute Zero and magnitude of each division on work scale and perfect gas scale, Joule’s free expansion, Joule Thomson effect, Joule-Thomson (Porous plug) experiment, conclusions and explanation, analytical treatment of Joule Thomson effect, Entropy, calculations of entropy of reversible and irreversible process, T-S diagram, entropy of a perfect gas, Nernst heat law (third law of thermodynamics), Liquefaction of gases, (oxygen, air, hydrogen and helium) solidification of helium below 4K, Cooling by adiabatic demagnetization.
4 THERMODYNAMICS-II
Derivation of Clausius-Clapeyron and Clausius latent heat equations and their significance, specific heat of saturated vapours, phase diagram and triple point of a substance, development of Maxwell thermodynamical relations, Thermodynamical functions: Internal energy (U), Helmholtz function (F), Enthalpy (H), Gibbs function (G) and the relations between them, derivation of Maxwell thermodynamical relations from thermodynamical functions, Application of Maxwell relations: relations between two specific heats of gas, Derivation of Clausius-Clapeyron and Clausius equation, variation of intrinsic energy with volume for (i) perfect gas (ii) Vander wall gas (iii) solids and liquids, derivation of Stefan’s law, adiabatic compression and expansion of gas & deduction of theory of Joule Thomson effect.
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