ï»¿ How does the Young's modulus change with temperature? Explain. from Physics Mechanical Properties of Solids Class 11 Manipur Board

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Mechanical Properties of Solids

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How does the Young's modulus change with temperature? Explain.

As temperature increases, the Young's modulus decreases. On heating, the substance expands and distance between the atoms increases. As a result inter-atomic and inter-molecular force decreases. So, Young's modulus also decreases.

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What is the force of adhesion?

Adhesive force is the attractive force between two unlike molecules. They are caused by forces acting between two substances like electrostatic force (attraction due to opposing charges), mechanical force etc.

E.g., Force of attraction between gum and paper.

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What is the force of cohesion?

Cohesive attraction or cohesive force is the force of attraction between same types of molecules sticking together.
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What do you understand by intermolecular forces?

Intermolecular force is the force between the molecules of the substance is called intermolecular force.

There is a dipole-dipole interaction between the molecules.
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What is the nature of inter-atomic or inter-molecular forces?

Inter-atomic or inter-molecular forces are electrostatic in nature.

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Define interatomic forces and give an example?

The force between atoms of the molecule is called interatomic force.

E.g.The nucleus and electron cloud of a molecule is binded by electrostatic force.
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