🔥 Thermodynamics – Objective Questions

Set 6 : Graphs & Matching (JEE Advanced)

✔ PV, VT, TS graph logic
✔ Process comparison
✔ Frequently asked JEE traps

Q5️⃣1️⃣

On a PV diagram, which curve is steeper?

• A) Isothermal
• B) Adiabatic
• C) Isobaric
• D) Isochoric

✔ Correct: B (Adiabatic)
Reason: P ∝ V^-γ (γ > 1)

---

Q5️⃣2️⃣

Area under PV curve represents:

• A) Heat supplied
• B) Internal energy change
• C) Work done
• D) Entropy change

✔ Correct: C

---

Q5️⃣3️⃣

In an isochoric process, the PV graph is:

• A) Horizontal line
• B) Vertical line
• C) Hyperbola
• D) Straight slant line

✔ Correct: B

---

Q5️⃣4️⃣

In which process does temperature remain constant on a PV diagram?

• A) Adiabatic
• B) Isobaric
• C) Isothermal
• D) Isochoric

✔ Correct: C

---

Q5️⃣5️⃣

On a Temperature–Entropy (T–S) graph, area under curve represents:

• A) Work done
• B) Heat absorbed
• C) Internal energy
• D) Pressure

✔ Correct: B

---

Q5️⃣6️⃣ Match the Following

Process	Graph Nature
1. Isothermal	a. Vertical line in PV
2. Isochoric	b. Hyperbola in PV
3. Isobaric	c. Horizontal line in PV

✔ Correct Match:
1 → b
2 → a
3 → c

---

Q5️⃣7️⃣

Which graph encloses maximum area for same initial and final states?

• A) Adiabatic
• B) Isothermal
• C) Isochoric
• D) Isobaric

✔ Correct: D

---

Q5️⃣8️⃣

A cyclic process on PV diagram encloses an area. This area represents:

• A) Net heat absorbed
• B) Net work done
• C) Change in internal energy
• D) Entropy change

✔ Correct: B

---

Q5️⃣9️⃣

For a reversible adiabatic process, entropy:

• A) Increases
• B) Decreases
• C) Remains constant
• D) Becomes zero

✔ Correct: C

---

Q6️⃣0️⃣

On which graph does an isothermal process appear as a straight line?

• A) PV
• B) PT
• C) VT
• D) TS

✔ Correct: C

---

✅ Objective Set – Page 6 Completed
➡ Next: Page 7 – Advanced Numericals & Multi-Concept Traps

📚 IIT–JEE PHYSICS MASTER LIBRARY (ADVANCED)

One-stop structured learning hub for JEE Advanced Physics
Concepts • Objective Questions • Final Revision • Complete Libraries

---

🔥 Thermodynamics – Objective Final Revision

Thermodynamics – Set 1
Set 2
Set 3
Set 4
Set 5
Set 6
Set 7
Set 8
Set 9
Set 10
Set 11
Set 12
Set 13
Set 14
Set 15
Set 16
Set 17
Set 18
Set 19
Set 20
Set 21
Set 22
Set 23
Set 24
Set 25
Set 26
Set 27
Set 28
Set 29
Set 30
Set 31
Set 32
Set 33
Set 34
Set 35
Set 36
Set 37
Set 38
Set 39
Set 40
Set 41
Set 42
Set 43
Set 44
Set 45
Set 46
Set 47
Set 48
Set 49
Set 50
Set 51
Set 52
Set 53
Set 54
Set 55
Set 56
Set 57
Set 59

---

📘 Complete Physics Libraries

• SHM – Complete Library
• Waves – Objective Library
• Gravitation – Complete Library
• Momentum & Collisions
• Centre of Mass
• Work, Energy & Power
• WEP – Intermediate Notes
• Motion in a Plane

---

🔗 Learning Hubs & Community

• IIT–JEE Physics Master Library
• Physics Mega Library
• Advanced Stage-5 Material
• Shaktimatha Learning Resource Hub
• WhatsApp Learning Channel

---

© Mind Grow Magazine | Structured for Serious IIT–JEE Aspirants