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CGP EDU Academic Team
Published on: September 12, 2026
In adiabatic expansion of a gas
Text Solution
Verified by ExpertsThe correct answer is:
B
In an adiabatic expansion of a gas, no heat is exchanged with the surroundings.
Step 1: When a gas expands adiabatically, it does work on the surroundings.
Step 2: This work comes from the internal energy of the gas, resulting in a decrease in internal energy.
Step 3: Since temperature is related to the internal energy, a fall in temperature occurs as the gas does work during expansion.
Thus, the correct answer is that its temperature falls.
Step 1: When a gas expands adiabatically, it does work on the surroundings.
Step 2: This work comes from the internal energy of the gas, resulting in a decrease in internal energy.
Step 3: Since temperature is related to the internal energy, a fall in temperature occurs as the gas does work during expansion.
Thus, the correct answer is that its temperature falls.
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