List of top Solid Mechanics Questions on Mohr’s circle for plane stress and plane strain asked in GATE XE

The Mohr’s circle corresponding to an infinitesimal element is shown in the figure. The plane PQ in the infinitesimal element, at an angle of \(\theta\) from the x-axis, is in a state of pure shear.

Which one of the following values of \(\theta\) (in degrees) is CORRECT?

Two equivalent descriptions of the state of stress at a point are shown in the figure. The normal stresses $\sigma_1$ and $\sigma_2$ as shown on the right must be, respectively,