A force of 1 N doubles the length of a cord having cross-sectional area 1 mm . The Young’s modulus of the material of cord is

In equilibrium the tensile stress to which a wire of radius r is subjected by attaching a mass ‘m’ is ____.

When load is applied to a wire, the extension is 3 mm, the extension in the wire of same length but half the radius by the same load is

The S.I. unit of compressibility is ____.

When the pressure applied to one litre of a liquid in increased by $2\times 10^{6}N\mathrm{/}{m}^2\mathrm{.}2\; \backslash times\; 10\; ^6\; N/m\; ^2.$ It volume decreases by $1c{m}^3\mathrm{.}1\; cm\; ^3.$ The bulk modulus of the liquid is

A cube of aluminium of each side 0.1 m is subjected to a shearing force of 100 N. The top face of the cube is displaced through 0.02 cm with respect to the bottom face. The shearing strain would be

A wire has Poisson’s ratio of 0.5. It is stretched by an external force to produce a longitudinal strain of $2\times 10^{-3}\mathrm{.}2\; \backslash times\; 10\; ^\{-3\}.$ If the original diameter was 2 mm, the final diameter after stretching is

The compressibility of a substance is the reciprocal of ___.

For which of the following is the modulus of rigidity highest?

An elongation of 0.2% in a wire of crosssection $10^{-4}{m}^{2}10^\{-4\}\; m^2$ causes a tension of 1000 N. Then its Young’s modulus is