Q 11-12-026NEETJEE MainMedium
A gas is heated at constant pressure until the rms speed of its molecules doubles. Its volume becomes
Answer: (D) four times
$v_{\text{rms}} \propto \sqrt{T}$, so doubling it needs $T$ to become $4$ times.
At constant pressure $V \propto T$, so the volume becomes $4$ times.
Solution by Sreeraj P, M.Sc Physics