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प्रश्न
A hot cup of coffee is kept on the table. After some time it attains a thermal equilibrium with the surroundings. By considering the air molecules in the room as a thermodynamic system, which of the following is true
विकल्प
ΔU > 0, Q = 0
ΔU > 0, W < 0
ΔU > 0, Q > 0
ΔU = 0, Q > 0
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उत्तर
ΔU > 0, Q > 0
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संबंधित प्रश्न
Give an example of some familiar process in which no heat is added to or removed from a system, but the temperature of the system changes.
A group of objects that can form a unit which may have the ability to exchange energy with its surrounding is called what?
On what basis a thermodynamic system can be classified?
Identify the state variables given here?
What is a thermodynamic system? Give examples.
What is mean by state variable? Give example.
Discuss the mechanical equilibrium.
Discuss the chemical equilibrium.
If the piston of a container is pushed fast inward. Will the ideal gas equation be valid in the intermediate stage? If not, why?
What are surroundings in thermodynamics?
