Example 1 · difficulty 1/5
If the net external force on a system of particles is zero, its centre of mass:
- A. Moves with constant velocity
- B. Must remain at rest
- C. Moves with constant acceleration
- D. Must move in a circle
2020 source guide · Physics
NEET 2020 Physics Rotational Motion Questions
Use this page to connect the official 2020 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 2/5
A shell at rest explodes into fragments in free space. Neglecting external forces, the centre of mass of all fragments:
- A. Moves with the fastest fragment
- B. Remains at the original position
- C. Moves opposite to the heaviest fragment
- D. Accelerates indefinitely
Example 3 · difficulty 2/5
A 2 kg body moving at 6 m s⁻¹ collides and sticks to a 4 kg body initially at rest. The velocity of their centre of mass before collision is:
- A. 1 m s⁻¹
- B. 3 m s⁻¹
- C. 6 m s⁻¹
- D. 2 m s⁻¹
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 2020 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 2020 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.