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
RH = 105 cm–1, h = 6.6 × 10–34 J s, c = 3 × 108 m/s)
1
Paschen series, ∞ → 3
2
Lyman series, ∞ → 1
3
Balmer series, ∞ → 2
4
Paschen series, 5 → 3