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Consider the following statements:
1. The first law of thermodynamics is a law of conservation of energy.
2. Perpetual motion machine of the first kind converts energy into equivalent work.
3. A closed system does not exchange work or energy with its surroundings.
4. The second law of thermodynamics stipulates the law of conservation of energy and entropy.
Which of the statements are correct?
  • a)
    1 and 2
  • b)
    2 and 4
  • c)
    2, 3 and 4
  • d)
    1, 2 and 3
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Consider the following statements:1. The first law of thermodynamics i...
A closed system does exchange work or energy with its surroundings. option „3‟ is wrong. 4. “The law of conservation of entropy” is imaginary so option „4‟ is also wrong.
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Most Upvoted Answer
Consider the following statements:1. The first law of thermodynamics i...
Statement Analysis:

Statement 1: The first law of thermodynamics is a law of conservation of energy.
Statement 2: Perpetual motion machine of the first kind converts energy into equivalent work.
Statement 3: A closed system does not exchange work or energy with its surroundings.
Statement 4: The second law of thermodynamics stipulates the law of conservation of energy and entropy.

Correct Answer: Option A (1 and 2)

Explanation:

First Law of Thermodynamics:
- The first law of thermodynamics is also known as the law of conservation of energy.
- It states that energy cannot be created nor destroyed, but it can be converted from one form to another.
- This law is applied to all systems, including closed, open, and isolated systems.

Perpetual Motion Machine:
- A perpetual motion machine is a hypothetical device that can operate indefinitely without any external energy source.
- According to the second law of thermodynamics, such a machine is impossible because it violates the law of conservation of energy.
- The statement 2 is incorrect because a perpetual motion machine of the first kind does not exist.

Closed System:
- A closed system is a system that does not exchange matter with its surroundings but can exchange energy.
- The statement 3 is incorrect because a closed system can exchange energy with its surroundings, but it cannot exchange matter.

Second Law of Thermodynamics:
- The second law of thermodynamics states that in any energy transfer, the total entropy of a closed system will always increase over time.
- This law is applied to all systems, including closed, open, and isolated systems.
- The statement 4 is incorrect because the second law of thermodynamics stipulates the law of conservation of energy and entropy, not just the law of conservation of energy.

Conclusion:
- The only correct statements are 1 and 2.
- The first law of thermodynamics is a law of conservation of energy, and perpetual motion machine of the first kind is impossible.
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Community Answer
Consider the following statements:1. The first law of thermodynamics i...
How it is option A. The statement 2 is wrong because PMM-1 are devices that produces work without any energy input. So only statement 1 is correct. Options need to be changed.
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Consider the following statements:1. The first law of thermodynamics is a law of conservation of energy.2. Perpetual motion machine of the first kind converts energy into equivalent work.3. A closed system does not exchange work or energy with its surroundings.4. The second law of thermodynamics stipulates the law of conservation of energy and entropy.Which of the statements are correct?a)1 and 2b)2 and 4c)2, 3 and 4d)1, 2 and 3Correct answer is option 'A'. Can you explain this answer?
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