NEET UG PHYSICS MCQ: THERMODYNAMICS

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Compressed air in the tube of a wheel of a cycle at normal temperature suddenly starts coming out from a puncture. The air inside

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Correct option: C

Starts becoming cooler

Option C (Starts becoming cooler) is correct because the sudden expansion of air is an adiabatic process, where the air does work on the surroundings, causing its internal energy and temperature to decrease.

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The work done during expansion of a gas is independent of pressure if the expansion takes place When heat is added to a system, which of the following is not possible? The

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\frac{1}{4}

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when temperature of sink is decreased by 50 K (keeping source fixed). What is the original temperature of the sink? If sink and source temperature of a refrigerator are

4^{\circ} \mathrm{C}

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