Which of the following affects the elasticity of a substance?
Correct answer: D. All of these
- A. Impurity of a substance
- B. Hammering and annealing
- C. Change in temperature
- D. All of these
Explanation
The elasticity of a substance, which is its ability to return to its original shape after deformation, can be influenced by several factors:Impurity: Impurities can introduce defects in the atomic structure of a solid, affecting its elastic behaviour.Hammering and annealing: These mechanical processes can alter the internal structure of a material, changing its mechanical properties, including elasticity.Change in temperature: Temperature influences the movement of atoms and the strength of bonds, therefore impacting elasticity.Therefore, the correct answer is Option D: All of these, as each listed factor can affect the elasticity of a substance. Options A, B, and C are each individually correct but do not encompass the entire range of influences.
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About Physics of Solids
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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