2019 source guide · Physics

NEET 2019 Physics Modern Physics Questions

Use this page to connect the official 2019 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 2/5

Light of wavelength 400 nm falls on a metal whose work function is 1.9 eV. Taking hc = 1240 eV nm, the magnitude of the stopping potential needed to just stop the fastest photoelectrons is:

A. 0.8 V
B. 1.9 V
C. 1.2 V
D. 3.1 V

Example 2 · difficulty 2/5

An electron and a proton have the same de Broglie wavelength. The ratio of the kinetic energy of the electron to that of the proton is:

A. 1
B. mₚ/mₑ
C. mₑ/mₚ
D. √(mₚ/mₑ)

Example 3 · difficulty 3/5

A 100 W source emits monochromatic light of wavelength 589 nm. The number of photons emitted per second is approximately (h = 6.63 × 10⁻³⁴ J s, c = 3 × 10⁸ m s⁻¹):

A. 3 × 10¹⁸
B. 3 × 10¹⁹
C. 3 × 10²¹
D. 3 × 10²⁰

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 2019 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 2019 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.