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A refrigerator transfers heat from the c...

A refrigerator transfers heat from the cold coling coils to the warm surroundings. Is it against the second law of thermodynamics? Justify your answer?

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According to the second law of thermodynamics, the heat energy by itself flow form a body at low temperature to a body at high temperature. However, it can flow, if some external agent performs work to do so. In a refrigerator, the external work performed by its compressor transfers heat from the cold cooling coils to the warm surroundings and therefore it is not aganist the second law of thermocynamics.
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RESONANCE-KTG & THERMODYNAMICS-SECTION
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  2. According to the law of equipartition of energy, the energy associated...

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  7. (a) Define two specific heats of a gas. Why is C(p) gt C(v)? (b) Sho...

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  8. Represent equation of an adiabatic process in terms of (i) T and V (ii...

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  9. Is the equation PV = RT valid for both the isothermal and adiabatic ch...

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  10. Define and adiabatic process and state two essential conditios for suc...

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  11. Discuss whether the following phenomena are reversible ? (i) Whaterfal...

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  12. What is meant by reversible engine? Explain, why the efficiency of a r...

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  13. What is heat pump ? Name two electric appliances, which work as heat p...

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  14. Even carnot heat engine cannot give 100% efficiency. Explain why OR ...

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  15. What are the conditions for thermodynamic equilibrium?

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  16. Define an isothermal process and state two essential conditions for su...

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  17. Give two examples each of (a) an isothermal change and (b) an adiabati...

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  18. What are degrees of freedom?

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  19. What is mean free path? Derive an expression for mean free path.

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  20. At room temperature (300K), the rms speed of the molecules of a certai...

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