Question

Figure 17.16 shows the P - V diagram for a fixed mass of an ideal gas undergoing cyclic process. AB represents isothermal process and CA represents adiabatic process. Which of the graphs shown in Fig. 17.17 represents the P - T diagram of the cyclic process ?

• A.
  
• B.
  
• C.
  
• D.
  

Answer 1

The correct option is A

Since AB is an isothermal process, the temperature of the gas remains constant between AB. Hence the P-T diagram must be perpendicular to the T - axis between A and B.