What is plastic deformation?

Plastic deformation refers to the permanent change in shape of a material.

The CBSE syllabus for 2024-2025 includes Chapter 8 “Mechanical Properties of Solids” from the Class 11 NCERT Physics textbook. This chapter delves into important concepts such as stress, strain, elasticity, Young’s modulus, bulk modulus, shear modulus and Poisson’s ratio. It explains how solids respond to external forces and the factors that influence their mechanical behavior. Students learn about how materials deform under different types of stress and strain and how these properties are quantified. Multiple-choice questions are provided to assess understanding of key principles like Hooke’s Law and stress-strain relationships. These questions also focus on the real-world applications of mechanical properties such as the strength and flexibility of materials. A strong grasp of these concepts is essential for success in academics and important for practical applications in engineering, material science and related fields. The chapter emphasizes both theoretical knowledge and practical understanding necessary for studying materials and structures.