Consider the cyclic process ABCA, shown in fig, performed on a sample of 2.0 mol if an ideal gas. A total of 1200 J if heat is withdrawn from the sample in the process. Find the work done by the gas during the part BC.

Answer

B, D

Explanation

n = 2mole`
`DeltaQ = - 1200J`
`DeltaU = 0(During cyclic process)`
`DeltaQ = DeltaU+DeltaW`
`rArr - 1200 = w_AB + W_BC + W_CA`
`rArr -1200 = nRDeltaT + W_BC + '0'`
`rArr -1200 = 2xx8.3xx200 + W_BC`
`W_BC = - 40xx8.3-1200`
` = -4520J