Question

An adiabatic process is one in which there is no transfer of heat across the boundary between system and surroundings. For such a process.

• A. $P_{ext}\Delta V=0$
• B. $q=w$
• C. $\Delta U=w$
• D. $\Delta U=0$

Answer 1

The correct option is C $\Delta U=w$

As we know,
$\Delta U=q+w$,
And for adiabatic process,
$q=0$

so,
$\Delta U=w$