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Specific Heat Capacities of Gases — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsSpecific Heat Capacities of Gases1 Mark
MCQ
Consider the processes A and B shown in the figure. It is possible that:
  • A
    Both the processes are isothermal.
  • B
    Both the processes are adiabatic.
  • ✓
    A is isothermal and B is adiabatic.
  • D
    A is adiabatic and B is isothermal.
✓

Answer

Correct option: C.
A is isothermal and B is adiabatic.
The slope of an adiabatic process is greater than that of an isothermal process. Since A and B are initiated from the same initial state, both cannot be isothermal or adiabatic, as they would be overlapping. But the curve of process B is steeper than the curve of process A. Hence, A is isothermal and B is adiabatic.

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