Q.
When a thin plate is subjected to loading in its own plane only, the condition is called _____.
Answer & Explanation
Plane stress occurs when a thin plate is subjected to loading in its own plane, with the stresses perpendicular to the plane being negligible. This is common for thin structures, such as plates or shells, where out-of-plane stresses do not significantly affect the behavior of the material.
Thus correct option is: A.