Heat treatment of muscular pain involves radiation of wavelength of about 900nm. Which spectral line of H -atom is suitable for this purpose? [RH = 1 × 105 cm-1, h = 6.6 × 10-34 Js, c = 3 × 108 ms-1]

Heat treatment of muscular pain involves radiation of wavelength of ab

1.	Heat treatment of muscular pain involves radiation of wavelength of about 900nm. Which spectral line of H -atom is suitable for this purpose? [RH = 1 × 105 cm-1, h = 6.6 × 10-34 Js, c = 3 × 108 ms-1]
A.	Paschen, 5 → 3
B.	Paschen, ∞ → 3
C.	Lyman, ∞ → 1
D.	Balmer, ∞ → 2
Answer» C. Lyman, ∞ → 1