MDCAT Physics — Atomic Spectra
Atomic Spectra is a core Physics topic in the PMDC MDCAT syllabus, covering 4 subtopics. Below are the subtopics to revise, how often the topic appears in past papers, and real past-paper MCQs to try.
Subtopics (4)
- Atomic Spectra / Line Spectrum
- Bohr Model
- Laser
- Series
How Atomic Spectra is tested
Across the 16 MDCAT past papers on ParhaiKrlo, Atomic Spectra accounts for 9 questions. It appears in 8 of them, about 1.1 questions a paper. The heaviest was MDCAT 2023, with 2 questions, and the most recent is MDCAT 2025, with 1.
| Paper | Questions |
|---|---|
| MDCAT 2025 | 1 |
| MDCAT 2024 | 1 |
| MDCAT 2023 | 2 |
| MDCAT 2022 | 1 |
| MDCAT 2017 | 1 |
| MDCAT 2013 | 1 |
| MDCAT 2010 | 1 |
| MDCAT 2008 | 1 |
Atomic Spectra MCQs from the MDCAT past papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · MDCAT 2025 · Atomic Spectra
The Balmer series of the hydrogen spectrum appears in the:
- A.Infrared region
- B.Ultraviolet region
- C.X-ray region
- D.Visible region
Show answer
Answer: D. Visible region — The Balmer series of hydrogen appears in the visible region.
- Q2 · MDCAT 2024 · Atomic Spectra
Which series falls in ultra violet region?
- A.Lyman
- B.Brachett
- C.Pfund
- D.Paschen
Show answer
Answer: A. Lyman — The Lyman series of hydrogen's spectrum falls in the ultraviolet region.
- Q3 · MDCAT 2023 · Atomic Spectra
Which of the following is the longest wavelength of radiation for the Paschen series?
- A.1870000000 m
- B.1870000000/ m
- C.0.00000187 m
- D.0.00000187 / m
Show answer
Answer: C. 0.00000187 m — The Paschen series' longest wavelength corresponds to the smallest energy transition within that series, giving the largest wavelength value among the given magnitudes.