In an adiabatic process ,no transfer of heattakes placebetween system and surroundings.Choose the correct option for free expansion of and ideal gas under adiabatic condition from the following :

In an adiabatic process ,no transfer of heattakes placebetween system

1.	In an adiabatic process ,no transfer of heattakes placebetween system and surroundings.Choose the correct option for free expansion of and ideal gas under adiabatic condition from the following :
Answer» `q=0 , Delta cancel(=) 0,w=0` `q cancel(=) 0, DeltaT =0,w=0` `q =0,DeltaT=0, w=0` `q=0,DeltaT=0,w cancel (=) 0` Solution :For FREE expansion , `P_(ext) = 0,w =- P _(ext) DeltaV=0` For ADIABATICPROCESS , `q=0` `:. DeltaU =q+w= 0`. This means that internal energy remains CONSTANT which is so at constant TEMPERATURE. Hence `DeltaT =0`