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Assertion: Air quickly leaking out of a balloon becomes coolers. Reason: The leaking air undergoes adiabatic expansion.A. If both assertion and reason are true and reason is the correct explanation of assertionB. If the assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false

Answer» Correct Answer - A
The leaking air of balloon undergoes adiabatic expansion . In this expansion , due to work done against external pressure, the internal energy of air reduces. Thus, it becomes cooler. Adiabatic expansion produces cooling.


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