Question

1. State Zeroth law of thermodynamics. How does it lead to the concept of temperature? 2. Establish relation between two specific heats of a gas. Which is greater and why? 3. State first law of thermodynamics. On its basis establish the relation between two molar specific heats for a gas. 4. Give two statements for the second law of thermodynamics. 5. Derive a relation for work done during an isothermal process. 6. Derive a relation for work done during an adiabatic process. 7. Apply first law of thermodynamics to (i) An isochoric process (ii) A cyclic process and (iii) An isobaric process State what happens to heat absorbed in each case. 8. Explain briefly the working principle of a refrigerator and obtain an expression for its coefficient performance. 9. Describe the operation of a Camot's engine. Calculate the efficiency of a Camot's engine and explain why the efficiency of an irreversible engine is small. 10. State Carnot theorem. Prove that the efficiency of a reversible heat engine is maximum. 11. Describe the working of a refrigerator as a heat pump. Derive an expression for its coefficient of performance.

Answer 1

The Zeroth Law of Thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other. Thermal equilibrium means that when two bodies are brought into contact with each other and separated by a barrier that is permeable to heat, there will be no transfer of heat from one to the other.

Answer 2

Answer:

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