Bulk strain is
Correct answer: C. 3D
- A. 1D
- B. 2D
- C. 3D
- D. All options are correct
Explanation
Bulk strain, also known as volumetric strain, refers to the change in volume of a material when subjected to uniform pressure in all directions. This is a three-dimensional change, making it appropriate to classify it as 3D strain. Option C is correct because it accurately describes the nature of bulk strain. Option A is incorrect because 1D strain does not involve volume change, only elongation or compression along a single axis. Option B is incorrect because 2D strain refers to changes within a plane and does not account for the volume change in three dimensions. Option D is incorrect because bulk strain is specifically a 3D phenomenon, not applicable to all dimensions.
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Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
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