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Kelvin- Planck statement states that
- a)The process whose sole result is transfer of heat from a colder object to a hotter object is not possible
- b)Irreversible processes can be made reversible under certain conditions
- c)No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to work
- d)Heat flows from colder body to hotter body
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Kelvin- Planck statement states thata)The process whose sole result is...
The Kelvin-Planck statement is a fundamental principle of thermodynamics that is applicable to all heat engines. It states that:
No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to work.
This statement implies that it is impossible to construct a heat engine that can extract heat from a single thermal reservoir and convert it completely into work. In other words, it is impossible to have a 100% efficient heat engine.
Explanation:
To understand the Kelvin-Planck statement, we need to have a basic understanding of heat engines. A heat engine is a device that converts heat into work. It operates on the principle of the Carnot cycle, which involves four processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression. The efficiency of a heat engine is defined as the ratio of the work output to the heat input. According to the second law of thermodynamics, the efficiency of a heat engine cannot exceed the efficiency of a reversible heat engine operating between the same two reservoirs.
The Kelvin-Planck statement is based on the fact that any heat engine must reject some heat to a low-temperature reservoir in order to operate. This means that not all of the heat energy can be converted into useful work. The statement implies that there must always be some waste heat that cannot be utilized to produce work. This is because all natural processes tend to move towards a state of maximum entropy, and the conversion of heat into work is a process that results in a decrease in entropy. Therefore, it is impossible to have a heat engine that can convert all of the heat energy it absorbs into useful work.
Conclusion:
In conclusion, the Kelvin-Planck statement is a fundamental principle of thermodynamics that states that it is impossible to construct a heat engine that can extract heat from a single thermal reservoir and convert it completely into work. This statement is based on the second law of thermodynamics, which states that all natural processes tend to move towards a state of maximum entropy. The Kelvin-Planck statement has important implications for the design and operation of heat engines, and it sets a fundamental limit on the efficiency of such devices.
No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to work.
This statement implies that it is impossible to construct a heat engine that can extract heat from a single thermal reservoir and convert it completely into work. In other words, it is impossible to have a 100% efficient heat engine.
Explanation:
To understand the Kelvin-Planck statement, we need to have a basic understanding of heat engines. A heat engine is a device that converts heat into work. It operates on the principle of the Carnot cycle, which involves four processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression. The efficiency of a heat engine is defined as the ratio of the work output to the heat input. According to the second law of thermodynamics, the efficiency of a heat engine cannot exceed the efficiency of a reversible heat engine operating between the same two reservoirs.
The Kelvin-Planck statement is based on the fact that any heat engine must reject some heat to a low-temperature reservoir in order to operate. This means that not all of the heat energy can be converted into useful work. The statement implies that there must always be some waste heat that cannot be utilized to produce work. This is because all natural processes tend to move towards a state of maximum entropy, and the conversion of heat into work is a process that results in a decrease in entropy. Therefore, it is impossible to have a heat engine that can convert all of the heat energy it absorbs into useful work.
Conclusion:
In conclusion, the Kelvin-Planck statement is a fundamental principle of thermodynamics that states that it is impossible to construct a heat engine that can extract heat from a single thermal reservoir and convert it completely into work. This statement is based on the second law of thermodynamics, which states that all natural processes tend to move towards a state of maximum entropy. The Kelvin-Planck statement has important implications for the design and operation of heat engines, and it sets a fundamental limit on the efficiency of such devices.
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Community Answer
Kelvin- Planck statement states thata)The process whose sole result is...
It works on the principle that no machine is 100% efficient. For instance if taking an ideal machine into consideration, work can be completely converted to heat. Now if the conditions are reversed, all heat cannot be converted to equal amount of work until and unless backed up by an external force.
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Kelvin- Planck statement states thata)The process whose sole result is transfer of heat from a colder object to a hotter object is not possibleb)Irreversible processes can be made reversible under certain conditionsc)No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to workd)Heat flows from colder body to hotter bodyCorrect answer is option 'C'. Can you explain this answer?
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Kelvin- Planck statement states thata)The process whose sole result is transfer of heat from a colder object to a hotter object is not possibleb)Irreversible processes can be made reversible under certain conditionsc)No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to workd)Heat flows from colder body to hotter bodyCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Kelvin- Planck statement states thata)The process whose sole result is transfer of heat from a colder object to a hotter object is not possibleb)Irreversible processes can be made reversible under certain conditionsc)No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to workd)Heat flows from colder body to hotter bodyCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Kelvin- Planck statement states thata)The process whose sole result is transfer of heat from a colder object to a hotter object is not possibleb)Irreversible processes can be made reversible under certain conditionsc)No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to workd)Heat flows from colder body to hotter bodyCorrect answer is option 'C'. Can you explain this answer?.
Kelvin- Planck statement states thata)The process whose sole result is transfer of heat from a colder object to a hotter object is not possibleb)Irreversible processes can be made reversible under certain conditionsc)No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to workd)Heat flows from colder body to hotter bodyCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Kelvin- Planck statement states thata)The process whose sole result is transfer of heat from a colder object to a hotter object is not possibleb)Irreversible processes can be made reversible under certain conditionsc)No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to workd)Heat flows from colder body to hotter bodyCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Kelvin- Planck statement states thata)The process whose sole result is transfer of heat from a colder object to a hotter object is not possibleb)Irreversible processes can be made reversible under certain conditionsc)No process is possible whose sole result is absorption of heat from a reservoir and all the heat is converted to workd)Heat flows from colder body to hotter bodyCorrect answer is option 'C'. Can you explain this answer?.
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