Q. 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

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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

Solution:

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) $

$=PV$