What is thermal expansion?

In an isothermal expansion

In an isothermal expansion of an ideal gas, ________.

During an isothermal expansion of an ideal gas,

What is thermal stress?

What is thermal stress?

Answer the following : What is linear expansions of solid ?

A plate made up of anisotropic material is circular in shape at temperature T_o . The coefficients of thermal expansion are X_A and X_B in two mutually perpendicular directions. When heated slightly, the shape of the plate will be

The pressure that has to be applied to the ends of a steel wire of length 10cm to keep its length constant when its temperature is raised by 100^@C is : (For steel Young's modulus is 2xx10^11 Nm^-2 and coefficient of thermal expansion is 1.1xx10^-5K^_1 )

Two rods of different materials having coefficients of thermal expansion alpha_1 , alpha_2 and Young's modulii Y_1 , Y_2 respectively are fixed between two rigid massive walls. The rods are heated such that they undergo the same increase in temperature. There is no bending of the rods. If alpha_1:alpha_2=2:3 , the thermal stresses developed in the two rods are equal provided Y_1:Y_2 is equal to

Name the types of thermal expansion.