Question

how does the elasticity of a material change with increase in temperature? Explain with the help of an example​

Answer 1

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Following are the factors affecting the elasticity of the material:

• Hammering and rolling: By hammering and rolling the material, the crystal grains are broken down into smaller units which results in an increase in elasticity of the material.
• Annealing: Annealing is done by heating and then cooling the materials slowly. This results in a decrease in the elasticity of the material.
• Temperature: As the temperature increases, intermolecular forces decreases, resulting in a decrease in the elasticity. But elasticity of invar steel is not dependent on the temperature.
• Impurities: Depending on the nature of the impurities, the elasticity of a material can either increase or decrease.

Answer 2

Answer:

Elasticity will decrease  on increasing temperature,because on increasing temp. there is increase in vibration of atoms,thus increment in atomic distance and decrease in atomic forces. e.g. on increasing temp. of rubber elasticity decreases.

Explanation: