# NEET Physics Atoms Questions Solved

In Bohr’s model, if the atomic radius of the first orbit is ${\mathrm{r}}_{0}$, then the radius of the fourth orbit is
(a) ${\mathrm{r}}_{0}$              (b) 4${\mathrm{r}}_{0}$
(c) ${\mathrm{r}}_{0}$/16          (d) 16${\mathrm{r}}_{0}$

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