Example 1 · difficulty 2/5
Which quantity can change due solely to internal forces in an isolated system of particles?
- A. Kinetic energy
- B. Total linear momentum
- C. Velocity of centre of mass
- D. Total mass
2021 source guide · Physics
NEET 2021 Physics Rotational Motion Questions
Use this page to connect the official 2021 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.
What to master
centre of mass, torque, angular momentum, rolling and moment of inertia.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 1/5
The vector product r × F represents:
- A. Work done by the force
- B. Torque about the chosen origin
- C. Linear impulse
- D. Power delivered
Example 3 · difficulty 1/5
A force of 10 N acts perpendicular to a position vector of magnitude 0.5 m. The torque magnitude is:
- A. 10 N m
- B. 20 N m
- C. 5 N m
- D. 0.05 N m
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
Frequently asked questions
Are these official NEET 2021 Physics Rotational Motion 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 2021 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.