NEET Physics Isothermal & Adiabatic Processes MCQ Question
Consider a diagram showing a piston-cylinder system undergoing an adiabatic process. The cylinder is insulated, and the piston moves compressing the gas. Which statement correctly describes the change in internal energy of the gas during this adiabatic compression?
The internal energy of the gas decreases because work is done on the system.
The internal energy of the gas remains constant because no heat is exchanged.
The internal energy of the gas increases because work is done on the system.
The internal energy of the gas decreases because no heat is exchanged.
Correct Answer
Detailed Explanation
In an adiabatic process, q = 0, and since work is done on the system during compression, the internal energy increases (∆U = w ad).
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