• # question_answer The following graph is obtained when the fraction of molecules is plotted against velocity. The profile curve will be same for the gases. (I) Oxygen gas at T temperature (II) Hydrogen gas at 2T temperature (III) Helium gas at 2T temperature (IV) Sulphur dioxide gas at 2T temperature A)  I and II                        B)  II and III           C)  I and IV                       D)  III and IV

Graph having same M/T value will have same profile curve $v=4\,m{{s}^{-1}}$           $Mg\,\,\sin \,\,\theta$ $Mg\,\,\sin \theta \times \frac{h}{2}Mg\,\cos \,\theta \,\times r$$\tan \theta =\frac{r}{h/2}$ $\theta ={{45}^{o}},$        $r=\frac{h}{2}$ Hence, they have the same profile curve.