If a gas expands at constant temperature, it indicates that
If a gas expands at constant temperature, it indicates that
kinetic energy of molecules decreases
pressure of the gas increases
kinetic energy of molecules remains the same
number of the molecules of gas increases
Solution
Key Idea :
$\begin{gathered}
K E=\frac{3}{2} R T \\
\mathrm{KE} \propto \mathrm{T}
\end{gathered}$
Here, the temperature of gas remains constant, hence kinetic energy of molecules remains the same.