Rankers Physics

Uncategorized: Practice Problem & Solution

$\Delta U$ 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? (2010 Pre)
$\Delta U = -\Delta W$, in a isothermal process
$\Delta U = -\Delta W$, in an adiabatic process
$\Delta U = \Delta W$, in a isothermal process
$\Delta U = \Delta W$, in an adiabatic process

Solution Explained:

To solve this problem, we apply the core principles of Uncategorized. Understanding the underlying formula is key to arriving at the correct answer below:

In an adiabatic process, no heat is exchanged with the surroundings ($\Delta Q = 0$). From the first law of thermodynamics, $\Delta Q = \Delta U + \Delta W$, which gives $\Delta U = -\Delta W$.

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