Question

The diagram represents the applied force F per unit area with the
corresponding change in length x per unit length produced in a thin wire of
uniform cross-section. If the curve is plotted, the region in which Hookess
law is obeyed, the region in which the material acts like a viscous liquid,
and the elastic limit respectively are represented by :

• A. ob, cc', c
• B. oc, cc', c
• C. ob, bc, c
• D. oa, bc, b .

Answer 1

Answer: (D)

oa, bc, b .

$\begin{array}{c}\text{In the above diagram, Oa represents region}\\ \text{which follow hookes law or called proportional}\\ \text{region. The region after Oa to the point}b\text{is called}\\ \text{elastic limit point.}\\ \text{So, option D is correct}\end{array}$