1.

Which among the following is a feature of adiabatic expansion ?A. `DeltaV lt 0`B. `Delta U lt 0`C. `Delta U gt 0`D. `Delta T =0`

Answer» Correct Answer - B
A/c to first law of thermodyanimcs
`Delta U = q+w`
In adiabatic process `q=0 therefore DeltaU =W`
In adiabatic expansion `W = -ve therefore -W = - DeltaU`
i.e., `DeltU lt O`


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