This chapter explains distinguish between the structures of crystalline, glassy, amorphous and polymeric solids. Describe that deformation of solids in one dimension. Define and use the terms stress, strain and the Young's modulus. Describe an experiment to determine the Young modulus of a metal wire.
This chapter examines how solid materials deform under external forces, covering both elastic (reversible) and plastic (permanent) deformation. Key concepts include:- Stress (σ) and Strain (ε): Defining the relationship between applied force and material deformation.
- Hooke’s Law: Elastic behavior within the proportional limit
- Elastic Moduli: Young’s Modulus (E) – Tensile/compressive stress, Shear Modulus (G) – Resistance to shape change and Bulk Modulus (K) – Resistance to volume change.
- Stress-Strain Curve: Analyzing elastic limit, yield point, and fracture point.
- Poisson’s Ratio (ν): Describes lateral contraction under longitudinal stretching.
- Energy Stored in Deformation: Work done in stretching a wire.
Ch-07: Deformation of Solids - MCQs
This document contains multiple choice questions related to the deformation of solids, covering topics such as crystalline and amorphous solids, Young's modulus, stress, strain, and various material properties. It includes questions about the characteristics of different materials, their behavior under stress, and fundamental concepts in solid mechanics. The questions are designed for Class 11 physics students to test their understanding of the subject.
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