The only right answer is ·Eqn.(1) is wrong because o22≠0 due to poissons effect Eqn.(4)is correct, 633+0 due to the imposed displacement,∈1≠0 due to poisson' s effect and E22=0 because of the plane strain condition Eqn. 3) is wrong, it contradicts Eqn.(2) Eqn.(4) is correct, the plane strain conditions are actually materialized via u2=0The only right answer is ++++ . • Eqn. (1) is wrong because σ22 �= 0 due to Poisson’s effect. • Eqn. (4) is correct, �33 �= 0 due to the imposed displacement, �11 �= 0 due to Poisson’s effect and �22 = 0 because of the plane strain condition. • Eqn. (3) is wrong, it contradicts Eqn. (2). • Eqn. (4) is correct, the plane strain conditions are actually materialized via u2 = 0