An ideal gas follows a process described by `PV^(2)=C` from `(P_(1), V_(1),T_(1)) " to " (P_(2), V_(2), T_(2))` (C is a constant). Then

An ideal gas is expand from (p_(1),V_(1),T_(1)) to (p_(2),V_(2),T_(2)) under different conditions. The correct statement(s) among the following is (are):

An ideal gas is expand from (p_(1),V_(1),T_(1)) to (p_(2),V_(2),T_(2)) under different conditions. The correct statement(s) among the following is (are):

An ideal gas is compressed from state (P_(1), V_(1), T) to state (P_(2), V_(2), T) isothermally. What is the change in the internal energy of the gas? Answer with reason.