The stress state at a point in a material under plane stress condition is equi-biaxial tension with a magnitude of 10 MPa. If one unit on the σ – π plane is 1 MPa, the Mohr's circle representation of the state-of-stress is given by

Options :

1. a circle with a radius of 10 units on the α – π plane

2. a circle with a radius equal to principal stress and its center at the origin of the σ – π plane

3. a point on the π axis at a distance of 10 units from the origin

4. a point on the σ axis at a distance of 10 units from the origin