If $\Delta U$ and $\Delta W$ represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true?
AIPMT 1998,AIPMT 2010, Easy
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(a)According to the first law of thermodynamics
$\Delta Q = \Delta U + \Delta W$
In adiabatic process $\Delta Q = 0$, hence $\Delta U = - \Delta W$
$\Delta Q = \Delta U + \Delta W$
In adiabatic process $\Delta Q = 0$, hence $\Delta U = - \Delta W$
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