[" The volume ( "V" ) of a monatomic gas varies with its temperature (T),as shown in the graph.The ratio of "],[" work done by the gas,to the heat absortbed by it,when it undergoes a change from state A to state "B" ,"],[" is "],[qquad [" is "],[qquad (1)/(7)],[" (1) "(2)/(5)," (2) "(2)/(7)]],[" (1) "(2)/(5)quad " (2) "(2)/(7)quad " (3) "(2)/(3)]