The wave number of the first emission line in the Balmer series

eSaral Updated on:
Question:

The wave number of the first emission line in the Balmer series of H-Spectrum is : $(R=$ Rydberg constant $)$ :

  1. $\frac{3}{4} R$

  2. $\frac{9}{400} \mathrm{R}$

  3. $\frac{5}{36} R$

  4. $\frac{7}{6} R$

Correct Option: , 3

Solution:

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