Mechanical Properties of Solids

What is the SI unit of stress?

Which of the following quantities is a measure of stiffness of a material?

If a wire of length L and cross-sectional area A is stretched by a force F, the strain produced is:

A wire of length 2 m and diameter 1 mm is stretched by a force of 10 N. If Young's modulus of the material is 2 × 10¹¹ Pa, what is the extension produced?

Which modulus of elasticity is relevant when a solid is subjected to volume change under pressure?

In the stress-strain curve of a metal, the point beyond which the metal does not return to its original shape is called:

The Poisson's ratio of a material is 0.25. If the longitudinal strain is 0.002, what is the lateral strain?

A steel wire and a copper wire of the same length and diameter are stretched by the same force. Which wire will have greater extension? (Given: Y_steel = 2 × 10¹¹ Pa, Y_copper = 1.1 × 10¹¹ Pa)

The relation between Bulk modulus (K), Young's modulus (Y), and Poisson's ratio (σ) is:

Which of the following statements is TRUE about shear modulus (modulus of rigidity)?