In which region lines of Balmer series like

Options

A. visible
B. infrered
C. ultra violet
D. radio wave

Answer

To determine the region in which the lines of the Balmer series lie, we can follow these steps:

### Step 1: Understand the Balmer Series
The Balmer series refers to the set of spectral lines that result from electron transitions in a hydrogen atom, where the electron falls to the second energy level (n=2) from higher energy levels (n=3, 4, 5, ...).

### Step 2: Identify the Wavelength Range
The wavelengths of the spectral lines in the Balmer series are specifically in the range of approximately 400 nm to 780 nm. This range corresponds to visible light.

### Step 3: Compare with Electromagnetic Spectrum Regions
The electromagnetic spectrum is divided into various regions based on wavelength:
- Radio Waves: > 1 mm
- Microwaves: 1 mm to 1 m
- Infrared: 700 nm to 1 mm
- Visible Light: 400 nm to 700 nm
- Ultraviolet: 10 nm to 400 nm
- X-rays: 0.01 nm to 10 nm
- Gamma Rays: < 0.01 nm

### Step 4: Conclusion
Since the wavelengths of the Balmer series (400 nm to 780 nm) fall within the range of visible light, we conclude that the lines of the Balmer series lie in the visible region.

### Final Answer
The lines of the Balmer series lie in the **visible region**.

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