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 :

A metallic of length l and cross - sectional area A is made of a material of Young's modulus Y. If the rod is elongated by an amount y, then the work done is proportional to:

A metal block is experencing an atmospheric pressure of 10⁵ N/m². When the same block is placed in a vaccum chamber, the fractional change in its volume : (the bulk modulus of metal is 1.25 x 10¹¹ N/m²)

According to C. E. van der Wall, the interatomic potential varies with the average interatomic distance (R) is proportional to :

One end of a uniform wire of length L and weight W is attached rigidly to a point in roof and a weight W₁ is suspended from its lower end. If S is the area of corss-section of the wire, the stress in the wire at a height of 3L/4 from its lower end is :

A sphere of radius 3 cm is subjected to a pressure of 100 atm. Its volume decreases by 0.3 cc. What will be bulk modulus?

A 5 m long steel wire is suspended from the ceiling of a room. A sphere of mass 25 kg and 10 cm radius is attached to another end of the wire. The  height of the ceiling is 5.21 m. When the sphere is made to oscillate as a pendulum, then its lowest point just touches the floor. The velocity of the sphere at the lowest point will be : 

(Given : Y = 2 x 10¹¹N/m², radius of wire = 0.05 cm)

The length of an iron wire is L and area of cross-section is A. The increase in length is l on applying the force F on its two ends. Which of the statement is correct ?

The Young's modulus of a wire is Y. If the energy per unit volume is E, then the strain will be :

A cube is subjected ta uniform volume compression. If the side of the cube decreases by 2 %, Calculate the bulk strain ?