For an ideal gas in an isothermal process, PV stays:
AFalling
BAt zero
CConstant
DRising up
Answer & Solution
Correct answer: C. Constant
1. The ideal gas equation ties P, V and T together.
2. With T fixed, the product of P and V cannot change.
3. So PV stays constant.
_Source: NCERT Class 11 Physics Part II, Chapter 12, Thermodynamics._
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