﻿ An ideal gas of bulk modulus K is enclosed in a container of fixed walls. Find the stress set up in the gas when heated through temperature θ. Let γ be the temperature coefficient of cubical expansion of gas.  from Physics Mechanical Properties of Solids Class 11 Manipur Board

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An ideal gas of bulk modulus K is enclosed in a container of fixed walls. Find the stress set up in the gas when heated through temperature θ. Let γ be the temperature coefficient of cubical expansion of gas.

Given, an ideal gas of bulk modulus 'K' and is heated to a temperature $\mathrm{\theta }$

Increase of temperature of gas at constant volume is equivalent if the gas is first heated at constant pressure and then compressed isothermally to original volume.

Let V be the volume of gas. When it is heated through a temperature θ at constant pressure, then the increase in volume of gas is,

∆V = Vγθ

Now compress the gas isothermally so that the volume decreases by ∆V = Vγθ.

If ∆P be the stress set up in the gas, then

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