This quantity represents the energy stored in the wire per unit volume during stretching.
The CBSE syllabus for 2024-2025 includes Chapter 8 “Mechanical Properties of Solids” from the Class 11 NCERT Physics textbook. This chapter covers essential concepts like stress, strain, elasticity, Young’s modulus, bulk modulus, shear modulus and Poisson’s ratio. It explains how solids deform under different types of forces and the factors that influence their mechanical properties. Multiple-choice questions help assess understanding of these principles such as Hooke’s Law and the stress-strain relationship. Understanding these concepts is crucial for both academic knowledge and real-life applications in various fields like engineering and materials science.
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The work done per unit volume in stretching a wire is called the **strain energy density**. It is a measure of the energy stored in the wire due to deformation and is given by the formula:
\[ u = \frac{1}{2} \sigma \epsilon \]
where:
– \( u \) is the strain energy density (work done per unit volume),
– \( \sigma \) is the stress applied to the wire,
– \( \epsilon \) is the strain produced in the wire.
This quantity is particularly important in the study of material mechanics as it helps in understanding how much energy a material can store before deforming permanently or breaking.
This question related to Chapter 8 physics Class 11th NCERT. From the Chapter 8. Mechanical Properties of Solids. Give answer according to your understanding.
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