Q. The energy of the highest energy photon of Balmer series of hydrogen spectrum is close to
A) $13.6\ eV$
B) $3.4\ eV$
C) $1.5\ eV$
D) $0.85\ eV$
Explanation
(b) $E = 13.6\left\lbrack \frac{1}{n_{1}^{2}} - \frac{1}{n_{2}^{2}} \right\rbrack$. For highest energy in Balmer series
$n_{1} = 2$ and $n_{2} = \infty \Rightarrow E = 13.6\left\lbrack \frac{1}{(2)^{2}} - \frac{1}{(\infty)^{2}} \right\rbrack = 3.4\ eV$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.