NEET Physics Isothermal & Adiabatic Processes MCQ Question
Consider a diagram showing an adiabatic process involving an ideal gas enclosed in a cylinder with a movable piston, separated from the surroundings by an adiabatic wall. If the gas transitions from an initial state A (temperature T_A) to a final state B (temperature T_B), which of the following correctly describes the energy changes in the system?
The internal energy change (ΔU) is equal to the work done (w_ad) on the system.
The internal energy change (ΔU) is zero because no heat is transferred.
The work done (w_ad) is zero because the adiabatic wall prevents energy transfer.
The internal energy change (ΔU) equals the heat transferred (q) since q = 0.
Correct Answer
Detailed Explanation
In an adiabatic process, there is no heat transfer (q = 0), so the change in internal energy (ΔU) is equal to the work done (w_ad) on the system. This is consistent with the relation ΔU = w_ad.
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