AIIMS 2019 Physics Adiabatic Processes Assertion Reason Question
Assertion: Air quickly leaking out of a balloon becomes cooler. Reason: The leaking air undergoes adiabatic expansion.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion is true because when air leaks out of a balloon, it expands rapidly, leading to a decrease in temperature, which is perceived as cooling. This phenomenon occurs due to adiabatic expansion, where the gas does work on its surroundings without heat exchange, resulting in a drop in temperature. Option B is incorrect because while both statements are true, the reason directly explains the assertion. Options C and D are incorrect as they misrepresent the truth of the assertion and reason, respectively. Understanding adiabatic processes is crucial in thermodynamics, illustrating how gas behavior changes under varying pressure and volume conditions.
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