The work done per unit volume in deforming a body is given by

Deforming refers to the change in shape or size of an object due to applied forces or stresses. This can occur elastically where the object returns to its original shape or plastically where it undergoes permanent changes. Deformation is a key concept in mechanics and materials science, influencing structural design.

Class 11 Physics Chapter 8 examines mechanical properties of solids focusing on stress strain relationships Young’s modulus bulk modulus and shear modulus. It explains elasticity Hooke’s law factors affecting material properties and their real-world applications. Mastery of these concepts is essential for engineers and scientists working with materials in construction and design.