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Which of the following statements is true about the zeroth law of thermodynamics?
- a)Heat always flows from a hotter object to a colder object.
- b)The internal energy of an isolated system remains constant.
- c)The total energy of an isolated system is conserved.
- d)If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.
Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is true about the zeroth law of ther...
The zeroth law of thermodynamics states that if two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.
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Which of the following statements is true about the zeroth law of ther...
The zeroth law of thermodynamics states that if two objects are in thermal equilibrium with a third object, then they are in thermal equilibrium with each other. This law is called the zeroth law because it was the last of the laws of thermodynamics to be formulated.
Explanation:
Thermal equilibrium is a state in which two objects are at the same temperature and there is no net flow of heat between them. When two objects are in thermal equilibrium, they can be said to have the same temperature. The zeroth law of thermodynamics establishes the concept of temperature and provides a basis for measuring and comparing temperatures.
The zeroth law is important because it allows us to define a temperature scale and establish a reference point for temperature measurements. It provides a foundation for the other laws of thermodynamics and helps us understand how heat flows between objects.
To understand why option 'D' is the correct answer, let's consider the other options:
a) Heat always flows from a hotter object to a colder object: This is not true in all cases. While heat generally flows from a hotter object to a colder object, there are exceptions such as in the case of heat pumps or refrigeration systems where heat is transferred from a colder object to a hotter object.
b) The internal energy of an isolated system remains constant: This statement refers to the first law of thermodynamics, not the zeroth law. The first law states that the total energy of an isolated system is conserved, but it does not specifically address thermal equilibrium between objects.
c) The total energy of an isolated system is conserved: This statement refers to the first law of thermodynamics, not the zeroth law. The first law states that the total energy of an isolated system is conserved, but it does not specifically address thermal equilibrium between objects.
Therefore, the correct answer is option 'D'. The zeroth law of thermodynamics establishes that if two objects are in thermal equilibrium with a third object, they are also in thermal equilibrium with each other. This law allows us to compare temperatures and establish a temperature scale.
Explanation:
Thermal equilibrium is a state in which two objects are at the same temperature and there is no net flow of heat between them. When two objects are in thermal equilibrium, they can be said to have the same temperature. The zeroth law of thermodynamics establishes the concept of temperature and provides a basis for measuring and comparing temperatures.
The zeroth law is important because it allows us to define a temperature scale and establish a reference point for temperature measurements. It provides a foundation for the other laws of thermodynamics and helps us understand how heat flows between objects.
To understand why option 'D' is the correct answer, let's consider the other options:
a) Heat always flows from a hotter object to a colder object: This is not true in all cases. While heat generally flows from a hotter object to a colder object, there are exceptions such as in the case of heat pumps or refrigeration systems where heat is transferred from a colder object to a hotter object.
b) The internal energy of an isolated system remains constant: This statement refers to the first law of thermodynamics, not the zeroth law. The first law states that the total energy of an isolated system is conserved, but it does not specifically address thermal equilibrium between objects.
c) The total energy of an isolated system is conserved: This statement refers to the first law of thermodynamics, not the zeroth law. The first law states that the total energy of an isolated system is conserved, but it does not specifically address thermal equilibrium between objects.
Therefore, the correct answer is option 'D'. The zeroth law of thermodynamics establishes that if two objects are in thermal equilibrium with a third object, they are also in thermal equilibrium with each other. This law allows us to compare temperatures and establish a temperature scale.
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Which of the following statements is true about the zeroth law of thermodynamics?a)Heat always flows from a hotter object to a colder object.b)The internal energy of an isolated system remains constant.c)The total energy of an isolated system is conserved.d)If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is true about the zeroth law of thermodynamics?a)Heat always flows from a hotter object to a colder object.b)The internal energy of an isolated system remains constant.c)The total energy of an isolated system is conserved.d)If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.Correct answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following statements is true about the zeroth law of thermodynamics?a)Heat always flows from a hotter object to a colder object.b)The internal energy of an isolated system remains constant.c)The total energy of an isolated system is conserved.d)If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is true about the zeroth law of thermodynamics?a)Heat always flows from a hotter object to a colder object.b)The internal energy of an isolated system remains constant.c)The total energy of an isolated system is conserved.d)If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.Correct answer is option 'D'. Can you explain this answer?.
Which of the following statements is true about the zeroth law of thermodynamics?a)Heat always flows from a hotter object to a colder object.b)The internal energy of an isolated system remains constant.c)The total energy of an isolated system is conserved.d)If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.Correct answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following statements is true about the zeroth law of thermodynamics?a)Heat always flows from a hotter object to a colder object.b)The internal energy of an isolated system remains constant.c)The total energy of an isolated system is conserved.d)If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is true about the zeroth law of thermodynamics?a)Heat always flows from a hotter object to a colder object.b)The internal energy of an isolated system remains constant.c)The total energy of an isolated system is conserved.d)If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other.Correct answer is option 'D'. Can you explain this answer?.
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