In the hydrogen atom, the electron makes a transition from the higher orbit (i) to a lower orbit (f). The ratio of the radius of the orbits in given…

In the hydrogen atom, the electron makes a transition from the higher orbit (i) to a lower orbit $\displaystyle (f)$. The ratio of the radius of the orbits in given by $\displaystyle r_i: r_f=16: 4$. The wavelength of photon emitted due to this transition is $\displaystyle \_\_\_\_$ nm. (Given Rydberg constant $\displaystyle =1.0973 \times 10^7 / \mathrm{m}$ )