An ideal gas is taken through cycle `A to B to C-A`, as shown in Fig. IF the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process `C to A` is

Options

A. `-5J`
B. `-10J`
C. `-15J`
D. `-20J`

Answer

A

Explanation

For cyclic process,
`Q_("cyclic")=W_(AB)+W_(BC)+W_(CA)`
`=10J+0+W_(CA)=5J implies W_(CA)=-5J`