Question

An ideal monoatomic gas is taken round the cycle $ABCDA$ as shown in the P - V diagram (see figure). The work done during the cycle is

• A. $\frac{1}{2} \,P V$
• B. $PV$
• C. $2 \,P V$
• D. $4\, P V$

Answer 1

Answer: (B)

$PV$

Answer 2

Work done during the cycle
area enclosed by P-V graph
=area of $\square \,A B C D$
$=A D \times C D$
$=(2 V-V) \times(2 P-P)$
$=PV$