Calculate the ratio of wavelenth of first spectral line of Lyman and Balmer series of hydrogen spectrum.

Explanation

To calculate the ratio of the wavelengths of the first spectral lines of the Lyman and Balmer series of the hydrogen spectrum, we will follow these steps:

### Step 1: Understand the Rydberg Formula
The Rydberg formula for the wavelength (λ) of the spectral lines is given by:
\[ \frac{1}{\lambda} = R \cdot z^2 \left( \frac{1}{n_1^2} - \frac{1}{n_2^2} \right) \]
where:
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