Q. In the above figure $D$ and $E$ respectively represent
A) Absorption line of Balmer series and the ionization energy of hydrogen
B) Absorption line of Balmer series and the wavelength lesser than lowest of the Lyman series
C) Spectral line of Balmer series and the maximum wavelength of Lyman series
D) Spectral line of Lyman series and the absorption of greater wavelength of limiting value of Paschen series
Explanation
(a) $D$ is excitation of electron from $2^{nd}$ orbit corresponding to absorption line in Balmer series and $E$ is the energy released to bring the electron from $\infty$ to ground state $i.e.,$ ionization energy
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.