Is stress a vector,scalar,or tensor?

Write the limitation of Hooke's law.

$Assertion:$ Stress is the internal restoring force per unit area of a body.
$Reason:$ Rubber is more elastic than steel.

$A$ composite heavy rope made of two materials is suspended vertically from a high ceiling. The ratios of different quantities for the upper rope to the lower rope are: length $\frac{L_u}{L_l} = \frac{1}{2}$,cross-sectional area $\frac{A_u}{A_l} = \frac{2}{1}$,and density $\frac{d_u}{d_l} = \frac{2}{3}$. What is the ratio of the maximum stress in the two ropes?

When a force $F_1$ is applied on a metallic wire,the length of the wire is $L_1$. If a force $F_2$ is applied on the same wire,the length of the wire is $L_2$. The original length of the wire $L$ is

The load versus elongation graph for four wires of the same material is shown in the figure. The thinnest wire is represented by the line