NEET > Physics Class 11 > Stress & Strain - 2
Stress & Strain - 2 Video Lecture - Physics Class 11 - NEET
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FAQs on Stress & Strain - 2 Video Lecture - Physics Class 11 - NEET
| 1. What is the difference between stress and strain? |  |
Ans. Stress and strain are both measures of the deformation of a material, but they represent different concepts. Stress refers to the internal force acting on a material per unit area, while strain represents the amount of deformation experienced by a material due to stress. In simpler terms, stress measures the force applied to a material, while strain measures the resulting deformation.
| 2. How are stress and strain related? | |
Ans. Stress and strain are directly related to each other through the material's mechanical properties. The relationship is described by Hooke's Law, which states that stress is proportional to strain within the elastic limit of a material. This means that the stress applied to a material will cause a proportional strain, allowing engineers to predict how a material will deform under different loads.
| 3. What are the types of stress? | |
Ans. There are three main types of stress:
1. Tensile stress: This type of stress occurs when a material is being pulled apart, causing it to elongate.
2. Compressive stress: Compressive stress is the opposite of tensile stress and occurs when a material is being compressed or squeezed, causing it to shorten.
3. Shear stress: Shear stress occurs when two forces act parallel to each other but in opposite directions, causing the material to deform by sliding or twisting.
| 4. What are the types of strain? | |
Ans. There are four main types of strain:
1. Tensile strain: Tensile strain occurs when a material is being stretched or elongated, resulting in a change in length.
2. Compressive strain: Compressive strain is the opposite of tensile strain and occurs when a material is being compressed or shortened.
3. Shear strain: Shear strain occurs when a material is subjected to shear stress, causing it to deform by sliding or twisting.
4. Volumetric strain: Volumetric strain refers to the change in volume of a material due to stress.
| 5. How do stress and strain affect the mechanical properties of materials? | |
Ans. Stress and strain play a crucial role in determining the mechanical properties of materials. The response of a material to stress and strain can affect its strength, stiffness, and ductility. Higher stress levels can lead to material failure, while certain materials may exhibit different levels of strain before reaching their breaking point. Understanding the relationship between stress and strain is essential for engineers and scientists in designing materials and structures that can withstand specific loads and conditions.
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