Consider the following statements for a 2 – D pure shear stress state at a point?
1. The principal stresses at the point have the same magnitude as the shear stress but are of opposite sign
2. The Mohr’s circle for the stress state reduces to zero
3. Principal planes are inclined at 450 to the planes for shear stresses
4. Maximum shear stress at the point is zero
Which of the statements given above are correct?
(a) 2 and 4 (b) 1 and 4 (c) 1 and 3 (d) 1, 2 and 3