Question

Lyman spectral series is found in region of spectrum

• A. Ultraviolet
• B. Visible
• C. Infra red
• D. Microwave

Hint:

Mnemonic: Lyman = UV, Balmer = Visible, Paschen+ = Infrared.

Answer 1

The Correct Option is A

Step 1: Recall hydrogen spectral series.
- Lyman series: transitions to \(n=1\), energy gap large → ultraviolet.
- Balmer series: transitions to \(n=2\) → visible.
- Paschen, Brackett, Pfund: transitions to \(n=3,4,5\) → infrared.
Step 2: Conclusion.
Thus, the Lyman series lies in the ultraviolet region.
Final Answer: \[ \boxed{\text{Ultraviolet}} \]