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Assertion (A): Efficiency of a reversible engine operating between temperature limits T1 and T2 is maximum.
Reason (R): Efficiency of a reversible engine is greater than that of an irreversible engine.
  • a)
    Both A and R are individually true and R is the correct explanation of A
  • b)
    Both A and R are individually true but R is NOT the correct explanation of A
  • c)
    A is true but R is false
  • d)
    A is false but R is true
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Assertion (A): Efficiency of a reversible engine operating between tem...
Assertion (A): Efficiency of a reversible engine operating between temperature limits T1 and T2 is maximum.
Reason (R): Efficiency of a reversible engine is greater than that of an irreversible engine.

The given assertion and reason are related to the efficiency of engines. Let's examine each statement individually and then analyze their relationship.

Explanation:
1. Efficiency of a reversible engine operating between temperature limits T1 and T2 is maximum:
The efficiency of an engine is defined as the ratio of the useful work output to the heat input. In the case of a reversible engine, it operates in a cycle that can be run both forward and backward without any loss or dissipation of energy. This means that the engine is able to convert the maximum amount of heat energy into useful work. Therefore, the efficiency of a reversible engine operating between temperature limits T1 and T2 is maximum.

2. Efficiency of a reversible engine is greater than that of an irreversible engine:
An irreversible engine is one that operates in a cycle with some irreversible processes, such as friction, heat transfer through finite temperature differences, or irreversibilities due to fluid flow. These irreversible processes result in energy losses and reduce the efficiency of the engine. On the other hand, a reversible engine operates in a cycle that consists of only reversible processes, which means there are no energy losses. As a result, the efficiency of a reversible engine is greater than that of an irreversible engine.

Relationship between Assertion and Reason:
Both the assertion and the reason are individually true, and the reason is a correct explanation of the assertion. The efficiency of a reversible engine is indeed maximum because it operates in a cycle without any energy losses, while an irreversible engine has energy losses due to irreversible processes. Therefore, the reversible engine is more efficient than the irreversible engine.

Conclusion:
The statement "Both A and R are individually true, and R is the correct explanation of A" is the correct answer. The efficiency of a reversible engine is maximum, and this is because it operates without any energy losses, unlike an irreversible engine.
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Community Answer
Assertion (A): Efficiency of a reversible engine operating between tem...
Assertion )between two temperature limits means the process will be having maximum efficiency like Carnot cycle / sterling cycle/ ericision cycle these are reversible
reason ) for irreversible cycles there will be entropy generation so efficiency is reduced as entropy itself is disorder was from actual path
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Assertion (A): Efficiency of a reversible engine operating between temperature limits T1 and T2 is maximum.Reason (R): Efficiency of a reversible engine is greater than that of an irreversible engine.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?
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