NEET Physics Kinetic Theory of Gases Questions Solved

$$\begin{gathered} \mathrm{The} \mathrm{root} \mathrm{mean} \mathrm{square} \mathrm{speed} \mathrm{of} \mathrm{oxygen} \mathrm{molecules} \left({\mathrm{O}}_2\right) \mathrm{at} \mathrm{a} \mathrm{certain} \mathrm{absolute} \mathrm{temperature} \mathrm{is} \mathrm{v}. \mathrm{If} \mathrm{the} \mathrm{temperature} \mathrm{is} \mathrm{doubled} \mathrm{and} \mathrm{oxygen} \\ \mathrm{gas} \mathrm{dissociates} \mathrm{into} \mathrm{oxygen}, \mathrm{the} \mathrm{rms} \mathrm{speed} \mathrm{would} \mathrm{be} \end{gathered}$$

1.  $\mathrm{v}$

2.  $\sqrt{2}\mathrm{v}$

3.  $2\mathrm{v}$

4.  $2\sqrt{2}\mathrm{v}$