Chemistry - Atomic Structure Question with Solution | TestHub

Heat treatment of muscular pain involves radiation of wavelength of about 900 nm . Which spectral line of H atom is suitable for this?
Given : Rydberg constant ${\mathrm{R}}_{\mathrm{H}}=10^5{\mathrm{cm}}^{-1},\mathrm{h}=6.6\times 10^{-34}\mathrm{J}\mathrm{s},\mathrm{c}=3\times 10^8\mathrm{m}/\mathrm{s}$ )