Question

In the following figure, four curves $A,B,C$ and $D$ are shown below. The curves are

• A. $A$ and $C$ for isothermal, while $B$ and $D$ for adiabatic.
• B. $A$ and $C$ for adiabatic, while $B$ and $D$ for isothermal.
• C. $A$ and $B$ for isothermal, while $C$ and $D$ for adiabatic.
• D. $A$ and $B$ for adiabatic, while $C$ and $D$ for isothermal.

Answer 1

Answer: (A)

Amount of work done in isothermal cycle is higher than in the adiabatic cycle. Hence, the curves are isothermal for $A$ and $C,$ while adiabatic for $B$ and $D$ .