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QPage 61: Q10: HC Verma: Concepts of Physics - Volume 2 Laws of Thermodynamics Page 61: Q10 Solution: The pressure and volume of an ideal gas both increase in a…
⚠️ Common Exam Traps & Conceptual Pitfalls
Students often recall $pV=\text{constant}$ and conclude that pressure and volume cannot increase together, forgetting that this relation holds only for isothermal changes; always use the full ideal‑gas law $pV=nRT$ and recognize that a rise in both $p$ and $V$ implies a rise in $T$.
The pressure and volume of an ideal gas both increase in a process.
Multiple Choice Options
- A Such a process is not possible.
- B The work done by the system is positive.
- C The temperature of the system must increase.
- D Heat supplied to the gas is equal to the change in internal energy.
Step-by-Step Verified Solution
**Answer:** (b), (c).
**Step-by-Step Explanation:**
If both P and V increase, work done is positive (b). Also, PV = nRT, so if PV increases, T increases (c).
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