Question
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.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Solution
C.
If assertion is true but reason is false.
In an adiabatic process, no exchange of heat is permissible
i.e dQ = 0.
As dQ = dU + dW
= 0
∴ dU = - dW.
Assertion is true but reason is false.
