Example 1 · difficulty 2/5
A gas absorbs 500 J of heat and performs 200 J of work. What is its change in internal energy?
- A. −700 J
- B. −300 J
- C. +300 J
- D. +700 J
2023 source guide · Physics
NEET 2023 Physics Thermodynamics Questions
Connect the official 2023 paper with current Physics practice without labelling original previews as PYQs.
200 original questions · explicit provenance labels
PhysicsPlate 76
NeetVellum atlas · fig. physics
76
What to master
state variables, heat, work, thermodynamic processes and heat engines.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 2/5
For a quasistatic expansion represented on a pressure-volume diagram, what does the area under the process curve equal?
- A. Change in temperature
- B. Heat capacity of the gas
- C. Change in internal energy
- D. Work done by the gas
Example 3 · difficulty 2/5
A gas expands irreversibly against a constant external pressure Pext from V1 to V2. Which expression gives the work done by the gas?
- A. Pext(V2 − V1)
- B. Pext(V1 − V2)
- C. (V2 − V1)/Pext
- D. Zero for every irreversible expansion
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 2023 Physics Thermodynamics 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.