One mole of an ideal gas is taken from state `A` to state `B` by three different processes (a) `ACB`, (b) `ADB` and (c ) `AEB` as shown in the `P - V` diagram. The heat absorbed by the gas is

Explanation

`W_(1)=PAMBNQP=800J`

`W_(2)=PAMBNQP=600J`

`W_(3)=PAMBNQP=400J`