A wire suspended vertically from one of its ends is stretched by attaching a weight of 200 N to the lower end. The weight stretches the wire by 1 mm. Then the elastic energy stored in the wire is :

There are two wires of same material and same length while the diameter of second wire is two times the diameter of first wire, then the ratio of extension produced in the wire by applying same load will be :

A wire  of  diameter 1 mm breaks under a tension of 1000 N. Another wire, of same material as that of the first one, but of diameter 2 mm breaks under a  tension equal to:

Two wires A and B are of the same material. Their lengths are the ratio 1 : 2 and diameters are in the ratio 2 : 1. When stretched by forces F_A and F_B respectively, they get equal increases in their lengths. Then the ratio   F_{A /}  F_B should be;

For the same cross-sectional area and for a given load, teh ratio of depressions for the beam of a square cross-section and circular cross-section is :

Which one of the following is not a unit of Young's modulus ?

A steel rod has a radius of 10 mm and a length of 1.0 m. A force stretches it along its length and produces a strain of 0.16%.If the  Young's modulus of the steel is 2.0 x 10¹¹ N m^-2. What is the magnitude of the force stretching the rod ?

A substance breaks down by a stress of 10⁶ N / m ².  If the density of the material of the wire is 3 X 10³ kg / m ³, then the length of the wire of the substance which will break under its own weight when suspended vertically will be :

The term liquid crystal refers to a state that is intermediate between :

The pressure of a medium is changed from 1.01 x 10⁵ Pa and change in volume is 10% keeping the temperature constant. The bulk modulus of the medium is: