Consider the following statements
1. Two – dimensional stresses applied to a thin plate in its own plane represent the plane stress condition.
2. Under plane stress condition, the strain in the direction perpendicular to the plane is zero.
3. Normal and shear stresses may occur simultaneously on a plane.
Which of these statements is/are correct?
(a) 1 only (b) 1 and 2
(c) 2 and 3 (d) 1 and 3