198- According to the figure below, for a fixed amount of ideal gas, in a process going from $V_1$ to $V_2$, which of the following statements is correct? [Figure: P-V diagram showing a curve from point B to point A, with $V_2$ and $V_1$ on the horizontal axis]
[a-] The internal energy of the gas increases.
[b-] The temperature of the gas decreases.
[p-] The temperature of the gas remains constant.
[t-] The work done on the gas equals the heat absorbed by the gas.
[th-] The work done on the gas equals the change in internal energy of the gas.
(1) a and th (2) a and t (3) b and th (4) p and t
\textbf{198-} According to the figure below, for a fixed amount of ideal gas, in a process going from $V_1$ to $V_2$, which of the following statements is correct?
\textit{[Figure: P-V diagram showing a curve from point B to point A, with $V_2$ and $V_1$ on the horizontal axis]}
\begin{itemize}
\item[a-] The internal energy of the gas increases.
\item[b-] The temperature of the gas decreases.
\item[p-] The temperature of the gas remains constant.
\item[t-] The work done on the gas equals the heat absorbed by the gas.
\item[th-] The work done on the gas equals the change in internal energy of the gas.
\end{itemize}
(1) a and th \hfill (2) a and t \hfill (3) b and th \hfill (4) p and t
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