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Assertion : A quasi static isothermal ex...

Assertion : A quasi static isothermal expansion of an ideal gas in a cylinder fitted with a frictionless movable pistonis a irreversible process.
Reason : A process is irreversible only if system remains in equilibrium with the surroundings at every stage.

A

If both assetion and reason are true and reaasons is the correct expanation of assetion

B

If both assetion and reason are tur but reason is not the correct explanation of assetion

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

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The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that "A quasi-static isothermal expansion of an ideal gas in a cylinder fitted with a frictionless movable piston is an irreversible process." - **Quasi-static Process**: A quasi-static process is one that happens infinitely slowly, allowing the system to remain in equilibrium with its surroundings at all times. - **Isothermal Expansion**: This means that the temperature of the gas remains constant during the expansion. Since a quasi-static isothermal expansion allows the system to remain in equilibrium, it is actually a reversible process, not an irreversible one. Therefore, the assertion is **false**. ### Step 2: Understand the Reason The reason states that "A process is irreversible only if the system remains in equilibrium with the surroundings at every stage." - This statement is incorrect because a process that remains in equilibrium with the surroundings at every stage is classified as a reversible process, not an irreversible one. Thus, the reason is also **false**. ### Step 3: Conclusion Since both the assertion and the reason are false, the correct answer is that both the assertion and reason are false. ### Final Answer Both assertion and reason are false. ---
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that "A quasi-static isothermal expansion of an ideal gas in a cylinder fitted with a frictionless movable piston is an irreversible process." - **Quasi-static Process**: A quasi-static process is one that happens infinitely slowly, allowing the system to remain in equilibrium with its surroundings at all times. - **Isothermal Expansion**: This means that the temperature of the gas remains constant during the expansion. ...
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