What is the ratio of wavelength of (II) line of Balmer series and (I) line of Lyman series ?

Explanation

To find the ratio of the wavelength of the second line of the Balmer series to the first line of the Lyman series, we will follow these steps:

### Step 1: Understand the Series
The Balmer series corresponds to electronic transitions that end at n=2, while the Lyman series corresponds to transitions that end at n=1.

### Step 2: Identify the Lines
- The second line of the Balmer series corresponds to the transition from n=4 to n=2.
- The first line of the Lyman series corresponds to the transition from n=2 to n=1.
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