Correct Answer - Option 1 : Volume and temperature both increases
- When a thermodynamic process undergoes a physical change in such a way that its pressure remains constant, then the change is known as the isobaric process.
⇒ P = constant
⇒ P = constant -----(1)
- The ideal gas equation is given as,
⇒ PV = nRT -----(2)
Where P = pressure, V = volume, T = temperature, n = number of moles, and R = gas constant
By equation 1 and equation 2 for an isobaric process,
⇒ V ∝ T -----(3)
- By equation 3 we can say for an isobaric process the volume of the gas is directly proportional to the temperature.
- In an expansion process the volume of the gas increases, so the temperature also increases. Hence, option 1 is correct.