For an orthotropic material, if E and v represent Young’s modulus and the poisons ratio, respectively, then what is the value of v12 if E1=200 Gpa, E2=160 Gpa and v21=0.25?

(a) 0.3125

(b) 0.05

(c) 0.2125

(d) 0.3

The question was posed to me in an online quiz.

My question is based upon Plane Elasticity in section Plane Elasticity of Finite Element Method