A cyclic process of an ideal monoatomic gas is shown in figure. The correct statement is (are):

Options

A. Work done by gas in process `AB` is more than that of the process `BC`.
B. net heat energy has been supplied to the system.
C. temperature of the gas is maximum in state `B`
D. in process `CA`, heat energy is rejected out by system.

Answer

B, D

Explanation

in cyclic process.
`DeltaU = 0`
`DeltaQ = DeltaW` as `DeltaW =+ve :. DeltaQ = +ve`
or Net heat energy has been supplied to the system, in process `CA`
`DeltaW = 0 DeltaU =- ve` (As `T =` decreases)
`:.` heat energy is rejected out by system Teperature at `C` is maximum `C`