Question

In the given $P-V$ diagram, a monoatomic gas $\left(\gamma=\frac{5}{3}\right)$ is first compressed adiabatically from state $A$ to state $B$. Then it expands isothermally from state $B$ to state $C$ [Given: $(\frac{1}{3})^{0.6}=05, \ln 2 \simeq 07$].

Which of the following statement(s) is(are) correct?

• A. The magnitude of the total work done in the process $A \rightarrow B \rightarrow C$ is $144 \,kJ$.
• B. The magnitude of the work done in the process $B \rightarrow C$ is $84\, kJ$.
• C. The magnitude of the work done in the process $A \rightarrow B$ is $60 \,kJ$.
• D. The magnitude of the work done in the process $C \rightarrow A$ is zero.

Answer 1

Answer: (B), (C), (D)

The magnitude of the work done in the process $B \rightarrow C$ is $84\, kJ$.

Answer 2

The correct options are:
(B) The magnitude of the work done in the process B → C is 84 kJ.

(C) The magnitude of the work done in the process A → B is 60 kJ.

(D) The magnitude of the work done in the process C → A is zero.