If the temperature increases, the modulus of elasticity
Correct answer: A. Decreases
- A. Decreases
- B. Increases
- C. Remains constant
- D. Becomes zero
Explanation
The modulus of elasticity, also known as Young's modulus, measures a material's resistance to deformation. As the temperature increases, atoms in the solid vibrate more intensely, weakening the intermolecular forces. This increased atomic movement reduces the stiffness of the material, hence decreasing the modulus of elasticity. This explains why Option A: Decreases is correct. Option B is incorrect because increased atomic vibrations typically reduce, not increase, the modulus. Option C is incorrect since the modulus changes with temperature. Option D is incorrect because the modulus doesn't become zero unless the material becomes a liquid.
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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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