An ideal gas is taken round a cyclic process represened by the triangle ABC drawn in order on a P-V diagram. The coordinates of A, B, C are (4,1), (2,4), (2,1) respectively. The work done in the complete cycle is

Options

A. 9 units
B. 6 units
C. 3 units
D. 0 units

Answer

C

Explanation

Work done is the area enclosed by the curve
`= (1)/(2) xx (4-2) xx (4-1) = 3` units
`= (1)/(2) xx (4-2) xx (4-1) = 3` units