1Physicsx vs gamma
The main difference between X-rays and γ rays is:
- A.Frequency
- B.Wave length
- C.Energy
- D.Origin
Answer and explanation locked
Nuclear Physics MCQs for MDCAT
3 Nuclear Physics questions from real MDCAT past papers (2020), each with the correct answer and a written explanation.
3 questionsPhysics
Practice questions
3 more questions in this chapter
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2Physicshalf life
There are initially 400 atoms in a radioactive sample. What of atoms after 3 half-life?
- A.400
- B.200
- C.50
- D.25
Answer and explanation locked
3Physicsradioisotopes in medicine
Which using radiation theraphy, cancerous thyroid is treated with radioisotope:
- A.Carbon
- B.235 uranium
- C.Thorium
- D.Iodine-131
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How Nuclear Physics is examined
Nuclear Physics sits in the official PMDC Physics curriculum, the document that defines what can and cannot appear in the 2026 paper. Everything on this page is tagged against that curriculum rather than against a chapter list invented for a website, which is why a chapter here matches the chapter your textbook and your teacher use.
Physics carries 36 of the 180 questions in the real paper - 20% of your MDCAT score, and the MDCAT is half your merit aggregate. PMDC does not publish how those 36questions are split across chapters, so no honest page can tell you “expect four from Nuclear Physics”. What the archive can tell you is what actually appeared: 3 Nuclear Physics questions out of the 37 Physics questions digitised so far.
Work through them with the explanations rather than checking answer letters. The explanation says why the other three options are wrong, and distractors get reused across years far more reliably than whole questions do.
Frequently asked questions
How many Nuclear Physics MCQs are on this page?
3, drawn from one past paper - the 2020 paper. Every one is transcribed from the real paper rather than written to look like a past paper question, and each carries the correct answer with a written explanation. 0 of them are readable in full without an account.
Is Nuclear Physics in the MDCAT 2026 syllabus?
Yes. Nuclear Physics is a chapter of the official PMDC Physics curriculum, and PMDC has confirmed the 2026 syllabus is unchanged from the 2025 revision, so everything on this page is still examinable.
How many Nuclear Physics questions come up in the MDCAT?
PMDC does not publish a per-chapter breakdown, so nobody can tell you a reliable number - be careful with pages that do. What can be counted is the paper as a whole: Physics is 36 of the 180 questions, and 8% of the Physics questions in our archive so far have come from Nuclear Physics.
Do these Nuclear Physics MCQs come with explanations?
Yes, and they are written from scratch rather than copied. An answer letter tells you nothing about why the other three options are wrong, which is the part that transfers to the next question. The first 0 questions of every paper are free to read in full; the rest need a pass.