Coefficient of apparent expansion of liquid for vessel(A)=γ1 Coefficient of apparent expansion of liquid for vessel (B)=γ2 For vessel A γreal =γapp +γvessel For vessel γvessel =3αA=3α ∵γreal =γ1+3α For vessel B,γreal =γ2+3αB ∴γ1+3α=γ2+3αB αB=