﻿ The volume of a spherical body is decreased by10–3 % when it is subjected to pressure of 40 atmospheres. Find the bulk modulus of body. (1 Atmosphere pressure =1.01x105 N/m2). from Physics Mechanical Properties of Solids Class 11 Manipur Board

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The volume of a spherical body is decreased by10–3 % when it is subjected to pressure of 40 atmospheres. Find the bulk modulus of body.

(1 Atmosphere pressure =1.01x105 N/m2).

Volume of a spherical body decreased = 10-3 %

Pressure, P = 40 atm

We know,
Bulk modulus, $\mathrm{K}=-\mathrm{V}\frac{\mathrm{dP}}{\mathrm{dV}}$

Percentage change in volume is given by 10-3 %

is the bulk modulus of the body.

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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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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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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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