In an adibatic process, no transfer of heat takes place between system and surroundings. Choose the correct option for free expansion of an ideal gas under adiabatic conditions from the following :

Options

A. `q=0,DeltaTne0,w=0`
B. `qne0,DeltaT=0,w=0`
C. `q=0,DeltaT=0,w=0`
D. `q=0,DeltaTlt0,wne0`

Answer

C

Explanation

For, free expansion, `w=0` For, adiabtic process, `q=0` From first law of thermodynamics:
`DeltaU=q+w=0+0=0`
Since, there is no change of internal energy hence temperature will also remain constant, i.e., `DeltaT=0`