Question

Which of the spectral line of hydrogen spectrum
lies in visible region ?
(a) 50 Hz
(b) 25 Hz
(c) 100 Hz
(d) 200 HZ​

Answer 1

Answer:

Four of the Balmer lines are in the technically "visible" part of the spectrum, with wavelengths longer than 400 nm and shorter than 700 nm. Parts of the Balmer series can be seen in the solar spectrum. H-alpha is an important line used in astronomy to detect the presence of hydrogen.