Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Atoms

Question:

The energy of the highest energy photon of Balmer series of hydrogen spectrum is close to

Options:

13.6 eV

3.4 eV

1.5 eV

0.85 eV

Correct Answer:

3.4 eV

Explanation:

$E=13.6\left[\frac{1}{n_1^2}-\frac{1}{n_2^2}\right]$. For highest energy in Balmer series $n_1=2$ and $n_2=\infty \Rightarrow E=13.6\left[\frac{1}{(2)^2}-\frac{1}{(\infty)^2}\right]$ = 3.4 eV