2023 source guide · Physics

NEET 2023 Physics Modern Physics Questions

Use this page to connect the official 2023 paper with current Physics practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 318 verified questions →Check official NTA archive ↗

What to master

photoelectric effect, atomic models, spectra, nuclei and radioactivity.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 4/5

A heavy nucleus of mass number 220, initially at rest, undergoes α-decay with a Q-value of 6.0 MeV. Neglecting electron masses, the kinetic energy carried away by the α-particle is nearly:

A. 6.0 MeV
B. 0.11 MeV
C. 3.0 MeV
D. 5.9 MeV

Example 2 · difficulty 2/5

Taking the nuclear radius constant R₀ = 1.2 fm, the approximate radius of a nucleus with mass number A = 125 is:

A. 6.0 fm
B. 4.8 fm
C. 7.2 fm
D. 15 fm

Example 3 · difficulty 4/5

Two radioactive samples P and Q contain equal numbers of nuclei at t = 0. Their half-lives are 2 h and 4 h respectively. The ratio of their activities (R_P : R_Q) after 8 h is:

A. 2 : 1
B. 1 : 1
C. 4 : 1
D. 1 : 2

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

Dual Nature of Radiation and Matter →Atoms →Nuclei →

Frequently asked questions

Are these official NEET 2023 Physics Modern Physics PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2023 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.