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(C) The work done in a cyclic process is equal to the area enclosed by the $P-V$ loop.For a clockwise cycle, the work done is positive, and for a coun

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$-2P_0V_0$

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(C) The work done in a cyclic process is equal to the area enclosed by the $P-V$ loop.For a clockwise cycle, the work done is positive, and for a counter-clockwise cycle, the work done is negative.In the given diagram, the cycle $ABCDA$ is traversed in a counter-clockwise direction.Area of the rectangle $ABCD = 	ext{length} 	imes 	ext{width} = (3V_0 - V_0) 	imes (2P_0 - P_0) = 2V_0 	imes P_0 = 2P_0V_0$.Since the cycle is counter-clockwise, the work done is $W = -(	ext{Area}) = -2P_0V_0$.

An ideal monoatomic gas is taken around the cycle $ABCDA$ as shown in the $P-V$ diagram. The work done during the cycle is

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