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Question: Answered & Verified by Expert
Assertion : In an adiabatic process, change in internal energy of a gas is equal to work done on or by the gas in the process.
Reason : Temperature of gas remains constant in an adiabatic process.
PhysicsThermodynamicsAIIMSAIIMS 2016
Options:
  • A If both assertion and reason are true and reason is the correct explanation of assertion.
  • B If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C If assertion is true but reason is false.
  • D If both assertion and reason are false.
Solution:
1957 Upvotes Verified Answer
The correct answer is: If assertion is true but reason is false.
Assertion is true but reason is false.
In an adiabatic process, no exchange of heat is permissible i.e., $d Q=0$.
As, $d Q=d U+d W=0 . \quad \therefore d U=-d W$.

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