Physics - Modern Physics Question with Solution | TestHub

Let the radius of ground state H-atom (as per Bohr's atomic model) be ${\mathrm{r}}_0$ and its ionization energy be ${\mathrm{E}}_0$. A hydrogen like system of ${\mathrm{e}}^{+}-{\mathrm{e}}^{-}$(positron - electron) is called positronium. If the radius of ground state positronium is r and ionization energy is E, then find the value of $\frac{{\mathrm{rE}}_0}{{\mathrm{r}}_0\mathrm{E}}$.