Within the elastic limit, the slope of graph between stress against strain gives ____

Solids which break or rupture before the elastic limits are called

The stress-strain curves are drawn for two different materials X and Y. It is observed that the ultimate strength point and the fracture point are close to each other for material X but are far apart for material Y. We can say that materials X and Y are likely to be (respectively),

Which of the following substances is ductile?

The Young’s modulus of a material is ${10}^{11}N{m}^{-2}10^\{11\}\; Nm^\{-2\}$ and its Poisson’s ratio is 0.2. The modulus of rigidity of the material is

Two pieces of wire A and B of the same material have their lengths in the ratio 1:2, and their diameters are in the ratio 2:1. If they are stretched by the same force, their elongations will be in the ratio

Young’s modulus of material of wire is ‘Y’ and strain energy per unit volume is ‘E’, then the  strain is

Strain energy per unit volume is given by

The strain energy per unit volume of the wire under increasing load is

The energy stored per unit volume of a strained wire is