ï»¿ What is yield point and why it is so named?  from Physics Mechanical Properties of Solids Class 11 Manipur Board

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What is yield point and why it is so named?

Yield point is also known as elastic limit. Beyond the elastic limit, when the load is increased, a stress is reached where the material continues to deform without any further increase in load. This point is called yield point. Since at yield point the deformation continues to increase without increase in stress, thus it may be said that there is total surrender of material to stress. The synonym of surrender is yield, that is why this point is called yield point.
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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 nature of inter-atomic or inter-molecular forces?

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

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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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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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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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