The pressure of a monoatomic gas increases linearly from 4×105N/m2 to 8×105N/m2when its volume increases from 0.2 m3 to 0.5 m3. The work done by the gas is
1.8×104J
4.8×105J
1.8×105J
4.8×106J
As it is linear relation
work done area of PV diagram =P2+P12V2−V1 =1.8×105J