## Chapter Chosen

Mechanical Properties of Solids

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CBSE Gujarat Board Haryana Board

## Previous Year Papers

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Class 10 Class 12
Find the ratio of breaking force required to break the wire of radius r to that of 2r.

Radius of the wire is given by r and 2r.
The breaking force of wire is given by,

F = σA

where,
σ is the breaking stress (constant of material) and A is the area of cross section.

Let F1 and F2 be the breaking force for wires respectively.

Therefore,

Hence the breaking force required to break the thick wire is four times the thin wire.

388 Views

What is the force of cohesion?

Cohesive attraction or cohesive force is the force of attraction between same types of molecules sticking together.
651 Views

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.
1032 Views

What is the nature of inter-atomic or inter-molecular forces?

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

637 Views

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.

587 Views

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.
630 Views