In which of the following thermodynamics process the temperature of a system decreases?
Correct answer: A. Adiabatic expansion
- A. Adiabatic expansion
- B. Isothermal expansion
- C. Adiabatic compression
- D. Isothermal compression
Explanation
The correct answer is Adiabatic expansion. In this process, the system does work on the surroundings without any heat exchange, leading to a decrease in its internal energy and temperature. In contrast, both isothermal processes (expansion and compression) maintain constant temperature due to heat exchange with the surroundings. Adiabatic compression increases the system's temperature because work is done on the system without heat exchange.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
Practise Thermodynamics
714 free Thermodynamics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More First Law of Thermodynamics questions
The efficiency of Carnot engine depends upon temperature of the
In Carnot cycle, at the end of the cyclic path, the final temperature of the working substance will beI. higher than the initial temperatureII. lower than the initial temperatureIII equal to the initial temperature
In an isothermal process, the internal energy of the system
In thermodynamics, the internal energy is a state function, which is
If the temperature of the source of heat decreases while the temperature of the sink remains constant,then the efficiency of a carrot engine
Entropy can be described as the