An ideal gas is taken through the cycle `ArarrBrarrCrarrA` as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J , the work done by the gas in the process `C rarr A` is

Answer

A

Explanation

For complete cycle ` DeltaU = 0 "so" W = Q = 5`
`implies W_(AB) + W_(BC) + W_(CA) = 5 "But" W_(BC) = 0` & `W_(AB) = 10(2-1) = 10 implies W_(CA) = 5- 10 = -5J`