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

Bihar BoardEnglish MediumSTD 12 SciencePhysicsSpecific Heat Capacities of Gases1 Mark
Question
Consider the processes A and B shown in the figure. It is possible that:

  1. Both the processes are isothermal.
  2. Both the processes are adiabatic.
  3. A is isothermal and B is adiabatic.
  4. A is adiabatic and B is isothermal.
✓

Answer

  1. A is isothermal and B is adiabatic.

Explanation:

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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